diff --git a/core/Makefile b/core/Makefile
index e267fe0..c5a0dee 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -656,11 +656,12 @@
 	$(call intermediates-dir-for,PACKAGING,ota_keys)/keys
 DUMPKEY_JAR := $(HOST_OUT_JAVA_LIBRARIES)/dumpkey.jar
 $(RECOVERY_INSTALL_OTA_KEYS): PRIVATE_OTA_PUBLIC_KEYS := $(OTA_PUBLIC_KEYS)
-$(RECOVERY_INSTALL_OTA_KEYS): $(OTA_PUBLIC_KEYS) $(DUMPKEY_JAR)
-	@echo "DumpPublicKey: $@ <= $(PRIVATE_OTA_PUBLIC_KEYS)"
+$(RECOVERY_INSTALL_OTA_KEYS): extra_keys := $(patsubst %,%.x509.pem,$(TARGET_EXTRA_RECOVERY_KEYS))
+$(RECOVERY_INSTALL_OTA_KEYS): $(OTA_PUBLIC_KEYS) $(DUMPKEY_JAR) $(extra_keys)
+	@echo "DumpPublicKey: $@ <= $(PRIVATE_OTA_PUBLIC_KEYS) $(extra_keys)"
 	@rm -rf $@
 	@mkdir -p $(dir $@)
-	java -jar $(DUMPKEY_JAR) $(PRIVATE_OTA_PUBLIC_KEYS) > $@
+	java -jar $(DUMPKEY_JAR) $(PRIVATE_OTA_PUBLIC_KEYS) $(extra_keys) > $@
 
 $(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTFS) $(MKBOOTIMG) $(MINIGZIP) \
 		$(INSTALLED_RAMDISK_TARGET) \
@@ -1069,6 +1070,9 @@
 ifdef INTERNAL_USERIMAGES_SPARSE_EXT_FLAG
 	$(hide) echo "extfs_sparse_flag=$(INTERNAL_USERIMAGES_SPARSE_EXT_FLAG)" >> $(zip_root)/META/misc_info.txt
 endif
+ifdef TARGET_EXTRA_RECOVERY_KEYS
+	$(hide) echo "extra_recovery_keys=$(TARGET_EXTRA_RECOVERY_KEYS)" >> $(zip_root)/META/misc_info.txt
+endif
 	@# Zip everything up, preserving symlinks
 	$(hide) (cd $(zip_root) && zip -qry ../$(notdir $@) .)
 	@# Run fs_config on all the system files in the zip, and save the output
diff --git a/core/base_rules.mk b/core/base_rules.mk
index d0c4aaf..107af9b 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -416,12 +416,14 @@
 #                 to guarantee that the files in full_java_libs will
 #                 be up-to-date.
 ifdef LOCAL_IS_HOST_MODULE
-# TODO: make prebuilt java libraries use the same
-#       intermediates path pattern as target java libraries.
 ifeq ($(LOCAL_BUILD_HOST_DEX),true)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH := -bootclasspath $(call java-lib-files,core-hostdex,$(LOCAL_IS_HOST_MODULE))
+
 full_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
 full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
 else
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH :=
+
 full_java_libs := $(addprefix $(HOST_OUT_JAVA_LIBRARIES)/,$(addsuffix $(COMMON_JAVA_PACKAGE_SUFFIX),$(LOCAL_JAVA_LIBRARIES)))
 full_java_lib_deps := $(full_java_libs)
 endif # LOCAL_BUILD_HOST_DEX
diff --git a/core/build_id.mk b/core/build_id.mk
index e954794..40bb35d 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -23,7 +23,7 @@
 # (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
 #
-BUILD_ID := OPENMASTER
+BUILD_ID := MASTER
 
 # DISPLAY_BUILD_NUMBER should only be set for development branches,
 # If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
diff --git a/core/combo/HOST_darwin-x86.mk b/core/combo/HOST_darwin-x86.mk
index 121f89b..b829108 100644
--- a/core/combo/HOST_darwin-x86.mk
+++ b/core/combo/HOST_darwin-x86.mk
@@ -59,14 +59,14 @@
 HOST_CUSTOM_LD_COMMAND := true
 
 define transform-host-o-to-shared-lib-inner
-    $(HOST_CXX) \
+$(hide) $(PRIVATE_CXX) \
         -dynamiclib -single_module -read_only_relocs suppress \
         $(HOST_GLOBAL_LD_DIRS) \
         $(HOST_GLOBAL_LDFLAGS) \
         $(PRIVATE_ALL_OBJECTS) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
         $(PRIVATE_LDLIBS) \
         -o $@ \
         $(PRIVATE_LDFLAGS) \
@@ -74,15 +74,15 @@
 endef
 
 define transform-host-o-to-executable-inner
-$(HOST_CXX) \
+$(hide) $(PRIVATE_CXX) \
         -o $@ \
         -Wl,-dynamic -headerpad_max_install_names \
         $(HOST_GLOBAL_LD_DIRS) \
         $(HOST_GLOBAL_LDFLAGS) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
         $(PRIVATE_ALL_OBJECTS) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
-        $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+        $(call normalize-host-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
         $(PRIVATE_LDFLAGS) \
         $(PRIVATE_LDLIBS) \
         $(HOST_LIBGCC)
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index abeaf95..e96ebce 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -231,7 +231,7 @@
 endif
 
 define transform-o-to-shared-lib-inner
-$(TARGET_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	-nostdlib -Wl,-soname,$(notdir $@) -Wl,-T,$(BUILD_SYSTEM)/armelf.xsc \
 	-Wl,--gc-sections \
 	-Wl,-shared,-Bsymbolic \
@@ -239,7 +239,7 @@
 	$(PRIVATE_ALL_OBJECTS) \
 	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
 	-Wl,--whole-archive \
-	$(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
@@ -252,7 +252,7 @@
 endef
 
 define transform-o-to-executable-inner
-$(TARGET_CXX) -nostdlib -Bdynamic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
+$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
 	-Wl,-dynamic-linker,/system/bin/linker \
     -Wl,--gc-sections \
 	-Wl,-z,nocopyreloc \
@@ -271,7 +271,7 @@
 endef
 
 define transform-o-to-static-executable-inner
-$(TARGET_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
+$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
     -Wl,--gc-sections \
 	-o $@ \
 	$(TARGET_GLOBAL_LD_DIRS) \
diff --git a/core/combo/TARGET_linux-sh.mk b/core/combo/TARGET_linux-sh.mk
index 2600b9e..036ecd7 100644
--- a/core/combo/TARGET_linux-sh.mk
+++ b/core/combo/TARGET_linux-sh.mk
@@ -114,7 +114,7 @@
 
 TARGET_CUSTOM_LD_COMMAND := true
 define transform-o-to-shared-lib-inner
-$(TARGET_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	-nostdlib -Wl,-soname,$(notdir $@) -Wl,-T,$(BUILD_SYSTEM)/shlelf.xsc \
 	-Wl,--gc-sections -Wl,-z,norelro \
 	-Wl,-shared,-Bsymbolic \
@@ -122,7 +122,7 @@
 	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
-	$(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
@@ -134,7 +134,7 @@
 endef
 
 define transform-o-to-executable-inner
-$(TARGET_CXX) -nostdlib -Bdynamic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
+$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
 	-Wl,-dynamic-linker,/system/bin/linker \
 	-Wl,--gc-sections -Wl,-z,norelro \
 	-Wl,-z,nocopyreloc \
@@ -152,7 +152,7 @@
 endef
 
 define transform-o-to-static-executable-inner
-$(TARGET_CXX) -nostdlib -Bstatic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
+$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
 	-Wl,--gc-sections -Wl,-z,norelro \
 	-o $@ \
 	$(TARGET_GLOBAL_LD_DIRS) \
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 86695a4..c234cf6 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -117,7 +117,7 @@
 
 TARGET_CUSTOM_LD_COMMAND := true
 define transform-o-to-shared-lib-inner
-$(TARGET_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	 -nostdlib -Wl,-soname,$(notdir $@) \
 	 -shared -Bsymbolic \
@@ -126,7 +126,7 @@
 	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
-	$(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
@@ -138,7 +138,7 @@
 
 
 define transform-o-to-executable-inner
-$(TARGET_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	-nostdlib -Bdynamic \
 	-Wl,-dynamic-linker,/system/bin/linker \
@@ -156,7 +156,7 @@
 endef
 
 define transform-o-to-static-executable-inner
-$(TARGET_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	-nostdlib -Bstatic \
 	-o $@ \
diff --git a/core/definitions.mk b/core/definitions.mk
index ea47f6b..b6f4515 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -735,7 +735,7 @@
 ###########################################################
 
 define transform-d-to-p
-@cp $(@:%.o=%.d) $(@:%.o=%.P); \
+$(hide) cp $(@:%.o=%.d) $(@:%.o=%.P); \
 	sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
 		-e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
 	rm -f $(@:%.o=%.d)
@@ -875,7 +875,7 @@
 	$(PRIVATE_CPPFLAGS) \
 	$(PRIVATE_DEBUG_CFLAGS) \
 	-MD -o $@ $<
-$(hide) $(transform-d-to-p)
+$(transform-d-to-p)
 endef
 
 
@@ -919,12 +919,12 @@
 
 define transform-c-to-o
 $(transform-c-to-o-no-deps)
-$(hide) $(transform-d-to-p)
+$(transform-d-to-p)
 endef
 
 define transform-s-to-o
 $(transform-s-to-o-no-deps)
-$(hide) $(transform-d-to-p)
+$(transform-d-to-p)
 endef
 
 ###########################################################
@@ -940,7 +940,7 @@
 
 define transform-m-to-o
 $(transform-m-to-o-no-deps)
-$(hide) $(transform-d-to-p)
+$(transform-d-to-p)
 endef
 
 ###########################################################
@@ -1056,19 +1056,24 @@
 $(call _concat-if-arg2-not-empty,$(1),$(wordlist 3001,99999,$(2)))
 endef
 
+# $(1): the full path of the source static library.
+define _extract-and-include-single-target-whole-static-lib
+@echo "preparing StaticLib: $(PRIVATE_MODULE) [including $(1)]"
+$(hide) ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(1)))_objs;\
+    rm -rf $$ldir; \
+    mkdir -p $$ldir; \
+    filelist=; \
+    for f in `$(TARGET_AR) t $(1)`; do \
+        $(TARGET_AR) p $(1) $$f > $$ldir/$$f; \
+        filelist="$$filelist $$ldir/$$f"; \
+    done ; \
+    $(TARGET_AR) $(TARGET_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@ $$filelist
+
+endef
+
 define extract-and-include-target-whole-static-libs
 $(foreach lib,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), \
-	$(hide) echo "preparing StaticLib: $(PRIVATE_MODULE) [including $(lib)]"; \
-	ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(lib)))_objs;\
-	rm -rf $$ldir; \
-	mkdir -p $$ldir; \
-	filelist=; \
-	for f in `$(TARGET_AR) t $(lib)`; do \
-	    $(TARGET_AR) p $(lib) $$f > $$ldir/$$f; \
-	    filelist="$$filelist $$ldir/$$f"; \
-	done ; \
-	$(TARGET_AR) $(TARGET_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@ $$filelist;\
-)
+    $(call _extract-and-include-single-target-whole-static-lib, $(lib)))
 endef
 
 # Explicitly delete the archive first so that ar doesn't
@@ -1085,19 +1090,24 @@
 ## Commands for running host ar
 ###########################################################
 
+# $(1): the full path of the source static library.
+define _extract-and-include-single-host-whole-static-lib
+@echo "preparing StaticLib: $(PRIVATE_MODULE) [including $(1)]"
+$(hide) ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(1)))_objs;\
+    rm -rf $$ldir; \
+    mkdir -p $$ldir; \
+    filelist=; \
+    for f in `$(HOST_AR) t $(1) | grep '\.o$$'`; do \
+        $(HOST_AR) p $(1) $$f > $$ldir/$$f; \
+        filelist="$$filelist $$ldir/$$f"; \
+    done ; \
+    $(HOST_AR) $(HOST_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@ $$filelist
+
+endef
+
 define extract-and-include-host-whole-static-libs
 $(foreach lib,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), \
-	$(hide) echo "preparing StaticLib: $(PRIVATE_MODULE) [including $(lib)]"; \
-	ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(lib)))_objs;\
-	rm -rf $$ldir; \
-	mkdir -p $$ldir; \
-	filelist=; \
-	for f in `$(HOST_AR) t $(lib) | grep '\.o$$'`; do \
-	    $(HOST_AR) p $(lib) $$f > $$ldir/$$f; \
-	    filelist="$$filelist $$ldir/$$f"; \
-	done ; \
-	$(HOST_AR) $(HOST_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@ $$filelist;\
-)
+    $(call _extract-and-include-single-host-whole-static-lib, $(lib)))
 endef
 
 # Explicitly delete the archive first so that ar doesn't
@@ -1119,8 +1129,8 @@
 # it to be overriden en-masse see combo/linux-arm.make for an example.
 ifneq ($(HOST_CUSTOM_LD_COMMAND),true)
 define transform-host-o-to-shared-lib-inner
-$(PRIVATE_CXX) \
-	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
+$(hide) $(PRIVATE_CXX) \
+	-Wl,-rpath-link=$(HOST_OUT_INTERMEDIATE_LIBRARIES) \
 	-Wl,-rpath,\$$ORIGIN/../lib \
 	-shared -Wl,-soname,$(notdir $@) \
 	$(PRIVATE_LDFLAGS) \
@@ -1142,13 +1152,13 @@
 define transform-host-o-to-shared-lib
 @mkdir -p $(dir $@)
 @echo "host SharedLib: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-host-o-to-shared-lib-inner)
+$(transform-host-o-to-shared-lib-inner)
 endef
 
 define transform-host-o-to-package
 @mkdir -p $(dir $@)
 @echo "host Package: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-host-o-to-shared-lib-inner)
+$(transform-host-o-to-shared-lib-inner)
 endef
 
 
@@ -1169,7 +1179,7 @@
 # it to be overriden en-masse see combo/linux-arm.make for an example.
 ifneq ($(TARGET_CUSTOM_LD_COMMAND),true)
 define transform-o-to-shared-lib-inner
-$(PRIVATE_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	-Wl,-rpath,\$$ORIGIN/../lib \
@@ -1178,7 +1188,7 @@
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
-	$(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
+	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
@@ -1190,13 +1200,13 @@
 define transform-o-to-shared-lib
 @mkdir -p $(dir $@)
 @echo "target SharedLib: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-o-to-shared-lib-inner)
+$(transform-o-to-shared-lib-inner)
 endef
 
 define transform-o-to-package
 @mkdir -p $(dir $@)
 @echo "target Package: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-o-to-shared-lib-inner)
+$(transform-o-to-shared-lib-inner)
 endef
 
 
@@ -1228,7 +1238,7 @@
 
 ifneq ($(TARGET_CUSTOM_LD_COMMAND),true)
 define transform-o-to-executable-inner
-$(PRIVATE_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	$(TARGET_GLOBAL_LD_DIRS) \
@@ -1250,7 +1260,7 @@
 define transform-o-to-executable
 @mkdir -p $(dir $@)
 @echo "target Executable: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-o-to-executable-inner)
+$(transform-o-to-executable-inner)
 endef
 
 
@@ -1269,7 +1279,7 @@
 define transform-o-to-static-executable
 @mkdir -p $(dir $@)
 @echo "target StaticExecutable: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-o-to-static-executable-inner)
+$(transform-o-to-static-executable-inner)
 endef
 
 
@@ -1279,8 +1289,8 @@
 
 ifneq ($(HOST_CUSTOM_LD_COMMAND),true)
 define transform-host-o-to-executable-inner
-$(PRIVATE_CXX) \
-	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
+$(hide) $(PRIVATE_CXX) \
+	-Wl,-rpath-link=$(HOST_OUT_INTERMEDIATE_LIBRARIES) \
 	-Wl,-rpath,\$$ORIGIN/../lib \
 	$(HOST_GLOBAL_LD_DIRS) \
 	$(PRIVATE_LDFLAGS) \
@@ -1301,7 +1311,7 @@
 define transform-host-o-to-executable
 @mkdir -p $(dir $@)
 @echo "host Executable: $(PRIVATE_MODULE) ($@)"
-$(hide) $(transform-host-o-to-executable-inner)
+$(transform-host-o-to-executable-inner)
 endef
 
 
@@ -1418,12 +1428,12 @@
 $(hide) mkdir -p $(dir $@)
 $(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR)
 $(call unzip-jar-files,$(PRIVATE_STATIC_JAVA_LIBRARIES),$(PRIVATE_CLASS_INTERMEDIATES_DIR))
-$(call dump-words-to-file,$(PRIVATE_JAVA_SOURCES),$(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))/java-source-list)
+$(call dump-words-to-file,$(PRIVATE_JAVA_SOURCES),$(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list)
 $(hide) if [ -d "$(PRIVATE_SOURCE_INTERMEDIATES_DIR)" ]; then \
-	    find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name '*.java' >> $(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))/java-source-list; \
+	    find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name '*.java' >> $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list; \
 fi
-$(hide) tr ' ' '\n' < $(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))java-source-list \
-    | sort -u > $(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))java-source-list-uniq
+$(hide) tr ' ' '\n' < $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list \
+    | sort -u > $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq
 $(hide) $(1) -encoding ascii \
     $(strip $(PRIVATE_JAVAC_DEBUG_FLAGS)) \
     $(if $(findstring true,$(LOCAL_WARNINGS_ENABLE)),$(xlint_unchecked),) \
@@ -1433,10 +1443,10 @@
     $(if $(findstring true,$(LOCAL_WARNINGS_ENABLE)),$(xlint_unchecked),) \
     -extdirs "" -d $(PRIVATE_CLASS_INTERMEDIATES_DIR) \
     $(PRIVATE_JAVACFLAGS) \
-    \@$(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))java-source-list-uniq \
+    \@$(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq \
     || ( rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) ; exit 41 )
-$(hide) rm -f $(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))/java-source-list
-$(hide) rm -f $(dir $(PRIVATE_CLASS_INTERMEDIATES_DIR))/java-source-list-uniq
+$(hide) rm -f $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list
+$(hide) rm -f $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq
 $(hide) jar $(if $(strip $(PRIVATE_JAR_MANIFEST)),-cfm,-cf) \
     $@ $(PRIVATE_JAR_MANIFEST) -C $(PRIVATE_CLASS_INTERMEDIATES_DIR) .
 endef
@@ -1447,6 +1457,51 @@
 $(hide) rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR)
 endef
 
+# Override the above definitions if we want to do incremetal javac
+ifeq (true, $(ENABLE_INCREMENTALJAVAC))
+define compile-java
+$(hide) mkdir -p $(dir $@)
+$(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR)
+$(hide) touch $(PRIVATE_CLASS_INTERMEDIATES_DIR)/newstamp
+$(call unzip-jar-files,$(PRIVATE_STATIC_JAVA_LIBRARIES),$(PRIVATE_CLASS_INTERMEDIATES_DIR))
+$(hide) if [ -e $(PRIVATE_CLASS_INTERMEDIATES_DIR)/stamp ] ; then \
+        newerFlag=$$(echo -n "-newer $(PRIVATE_CLASS_INTERMEDIATES_DIR)/stamp") ; \
+    fi ; \
+    find $(PRIVATE_JAVA_SOURCES) $$newerFlag > $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list ; \
+    if [ -d "$(PRIVATE_SOURCE_INTERMEDIATES_DIR)" ]; then \
+        find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name '*.java' $$newerFlag >> $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list; \
+    fi
+$(hide) tr ' ' '\n' < $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list \
+    | sort -u > $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq
+@echo "(Incremental) build source files:"
+@cat $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq
+$(hide) if [ -s $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq ] ; then \
+    $(1) -encoding ascii \
+    $(strip $(PRIVATE_JAVAC_DEBUG_FLAGS)) \
+    $(if $(findstring true,$(LOCAL_WARNINGS_ENABLE)),$(xlint_unchecked),) \
+    $(2) \
+    $(addprefix -classpath ,$(strip \
+        $(call normalize-path-list,$(PRIVATE_ALL_JAVA_LIBRARIES) $(PRIVATE_CLASS_INTERMEDIATES_DIR)))) \
+    $(if $(findstring true,$(LOCAL_WARNINGS_ENABLE)),$(xlint_unchecked),) \
+    -extdirs "" -d $(PRIVATE_CLASS_INTERMEDIATES_DIR) \
+    $(PRIVATE_JAVACFLAGS) \
+    \@$(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq \
+    || ( exit 41 ) \
+fi
+$(hide) rm -f $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list
+$(hide) rm -f $(PRIVATE_CLASS_INTERMEDIATES_DIR)/java-source-list-uniq
+$(hide) rm -f $@
+$(hide) jar $(if $(strip $(PRIVATE_JAR_MANIFEST)),-cfm,-cf) \
+    $@ $(PRIVATE_JAR_MANIFEST) -C $(PRIVATE_CLASS_INTERMEDIATES_DIR) .
+$(hide) mv $(PRIVATE_CLASS_INTERMEDIATES_DIR)/newstamp $(PRIVATE_CLASS_INTERMEDIATES_DIR)/stamp
+endef
+
+define transform-java-to-classes.jar
+@echo "target Java: $(PRIVATE_MODULE) ($(PRIVATE_CLASS_INTERMEDIATES_DIR))"
+$(call compile-java,$(TARGET_JAVAC),$(PRIVATE_BOOTCLASSPATH))
+endef
+endif # ENABLE_INCREMENTALJAVAC
+
 define transform-classes.jar-to-emma
 $(hide) java -classpath $(EMMA_JAR) emma instr -outmode fullcopy -outfile \
     $(PRIVATE_EMMA_COVERAGE_FILE) -ip $< -d $(PRIVATE_EMMA_INTERMEDIATES_DIR) \
@@ -1570,7 +1625,7 @@
 # in transform-java-to-classes for the sake of vm-tests.
 define transform-host-java-to-package
 @echo "host Java: $(PRIVATE_MODULE) ($(PRIVATE_CLASS_INTERMEDIATES_DIR))"
-$(call compile-java,$(HOST_JAVAC),)
+$(call compile-java,$(HOST_JAVAC),$(PRIVATE_BOOTCLASSPATH))
 $(hide) if [ ! -z "$(PRIVATE_EXTRA_JAR_ARGS)" ]; then jar uf $@ $(PRIVATE_EXTRA_JAR_ARGS); fi
 endef
 
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index 4da2632..9f44c32 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -4,7 +4,7 @@
 ####################################
 
 # TODO: replace it with device's BOOTCLASSPATH
-DEXPREOPT_BOOT_JARS := core:bouncycastle:ext:framework:android.policy:services:core-junit
+DEXPREOPT_BOOT_JARS := core:apache-xml:bouncycastle:ext:framework:android.policy:services:core-junit
 DEXPREOPT_BOOT_JARS_MODULES := $(subst :, ,$(DEXPREOPT_BOOT_JARS))
 
 DEXPREOPT_BUILD_DIR := $(OUT_DIR)
diff --git a/core/key_char_map.mk b/core/key_char_map.mk
index 0f112f2..4693743 100644
--- a/core/key_char_map.mk
+++ b/core/key_char_map.mk
@@ -20,8 +20,14 @@
 
 $(LOCAL_BUILT_MODULE) : PRIVATE_SRC_FILES := $(full_src_files)
 
+ifeq ($(BUILD_TINY_ANDROID),true)
+$(LOCAL_BUILT_MODULE) : $(full_src_files)
+	@echo KeyCharMap: $@
+	@mkdir -p $(dir $@)
+	$(hide) touch $@
+else
 $(LOCAL_BUILT_MODULE) : $(full_src_files) $(KCM)
 	@echo KeyCharMap: $@
 	@mkdir -p $(dir $@)
 	$(hide) $(KCM) $(PRIVATE_SRC_FILES) $@
-    
+endif
\ No newline at end of file
diff --git a/core/main.mk b/core/main.mk
index 10a01ce..b4d1c87 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -155,7 +155,23 @@
 # These are the modifier targets that don't do anything themselves, but
 # change the behavior of the build.
 # (must be defined before including definitions.make)
-INTERNAL_MODIFIER_TARGETS := showcommands checkbuild all
+INTERNAL_MODIFIER_TARGETS := showcommands checkbuild all incrementaljavac
+
+.PHONY: incrementaljavac
+incrementaljavac: ;
+
+# WARNING:
+# ENABLE_INCREMENTALJAVAC should NOT be enabled by default, because change of
+# a Java source file won't trigger rebuild of its dependent Java files.
+# You can only enable it by adding "incrementaljavac" to your make command line.
+# You are responsible for the correctness of the incremental build.
+# This may decrease incremental build time dramatically for large Java libraries,
+# such as core.jar, framework.jar, etc.
+ENABLE_INCREMENTALJAVAC :=
+ifneq (,$(filter incrementaljavac, $(MAKECMDGOALS)))
+ENABLE_INCREMENTALJAVAC := true
+MAKECMDGOALS := $(filter-out incrementaljavac, $(MAKECMDGOALS))
+endif
 
 # Bring in standard build system definitions.
 include $(BUILD_SYSTEM)/definitions.mk
@@ -298,6 +314,7 @@
   ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.dexopt-flags=m=y
 endif
 
+ifneq ($(BUILD_TINY_ANDROID),true)
 # Install an apns-conf.xml file if one's not already being installed.
 ifeq (,$(filter %:system/etc/apns-conf.xml, $(PRODUCT_COPY_FILES)))
   PRODUCT_COPY_FILES += \
@@ -318,6 +335,7 @@
     endif
   endif
 endif
+endif
 
 ADDITIONAL_BUILD_PROPERTIES += net.bt.name=Android
 
@@ -456,11 +474,11 @@
 	bionic \
 	system/core \
 	system/extras/ext4_utils \
+	system/extras/su \
 	build/libs \
 	build/target \
 	build/tools/acp \
 	build/tools/apriori \
-	build/tools/kcm \
 	build/tools/soslim \
 	external/elfcopy \
 	external/elfutils \
diff --git a/core/prebuilt.mk b/core/prebuilt.mk
index b4717e0..f5eebc8 100644
--- a/core/prebuilt.mk
+++ b/core/prebuilt.mk
@@ -45,10 +45,20 @@
 ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
 # for target java libraries, the LOCAL_BUILT_MODULE is in a product-specific dir,
 # while the deps should be in the common dir, so we make a copy in the common dir.
-common_library_jar := $(call intermediates-dir-for,JAVA_LIBRARIES,$(LOCAL_MODULE),,COMMON)/$(notdir $(LOCAL_BUILT_MODULE))
-$(common_library_jar) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ACP)
+# For nonstatic library, $(common_javalib_jar) is the dependency file,
+# while $(common_classes_jar) is used to link.
+common_classes_jar := $(call intermediates-dir-for,JAVA_LIBRARIES,$(LOCAL_MODULE),,COMMON)/classes.jar
+common_javalib_jar := $(dir $(common_classes_jar))javalib.jar
+
+$(common_classes_jar) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ACP)
 	$(transform-prebuilt-to-target)
-endif
+
+$(common_javalib_jar) : $(common_classes_jar) | $(ACP)
+	$(transform-prebuilt-to-target)
+
+# make sure the classes.jar and javalib.jar are built before $(LOCAL_BUILT_MODULE)
+$(LOCAL_BUILT_MODULE) : $(common_javalib_jar)
+endif # TARGET JAVA_LIBRARIES
 
 ifeq ($(LOCAL_CERTIFICATE),EXTERNAL)
   # The magic string "EXTERNAL" means this package will be signed with
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 23e45a2..7109989 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -59,7 +59,7 @@
 ifeq "" "$(PLATFORM_VERSION_CODENAME)"
   # This is the current development code-name, if the build is not a final
   # release build.  If this is a final release build, it is simply "REL".
-  PLATFORM_VERSION_CODENAME := AOSP
+  PLATFORM_VERSION_CODENAME := Honeycomb
 endif
 
 ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
@@ -96,3 +96,4 @@
   # anyone trying to parse it as an integer will probably get "0".
   BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
 endif
+
diff --git a/envsetup.sh b/envsetup.sh
index 4b2c19e..2faeed1 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -695,6 +695,8 @@
                     ARGS="$ARGS showcommands"
                 elif [ "$DIR" = dist ]; then
                     ARGS="$ARGS dist"
+                elif [ "$DIR" = incrementaljavac ]; then
+                    ARGS="$ARGS incrementaljavac"
                 else
                     echo "No Android.mk in $DIR."
                     return 1
diff --git a/target/product/core.mk b/target/product/core.mk
index 06b7003..7957a07 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -23,6 +23,7 @@
     ro.config.alarm_alert=Alarm_Classic.ogg
 
 PRODUCT_PACKAGES := \
+    apache-xml \
     bouncycastle \
     com.android.location.provider \
     com.android.location.provider.xml \
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index cfc518a..df96d9d 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -196,9 +196,9 @@
 	zh_TW
 
 # include available languages for TTS in the system image
-include external/svox/pico/lang/PicoLangDeDeInSystem.mk
-include external/svox/pico/lang/PicoLangEnGBInSystem.mk
-include external/svox/pico/lang/PicoLangEnUsInSystem.mk
-include external/svox/pico/lang/PicoLangEsEsInSystem.mk
-include external/svox/pico/lang/PicoLangFrFrInSystem.mk
-include external/svox/pico/lang/PicoLangItItInSystem.mk
+-include external/svox/pico/lang/PicoLangDeDeInSystem.mk
+-include external/svox/pico/lang/PicoLangEnGBInSystem.mk
+-include external/svox/pico/lang/PicoLangEnUsInSystem.mk
+-include external/svox/pico/lang/PicoLangEsEsInSystem.mk
+-include external/svox/pico/lang/PicoLangFrFrInSystem.mk
+-include external/svox/pico/lang/PicoLangItItInSystem.mk
diff --git a/tools/event_log_tags.py b/tools/event_log_tags.py
index 81e8b39..645839e 100644
--- a/tools/event_log_tags.py
+++ b/tools/event_log_tags.py
@@ -90,6 +90,14 @@
         else:
           description = None
 
+        if description:
+          # EventLog.java checks that the description field is
+          # surrounded by parens, so we should too (to avoid a runtime
+          # crash from badly-formatted descriptions).
+          if not re.match(r"\(.*\)\s*$", description):
+            self.AddError("tag \"%s\" has unparseable description" % (tagname,))
+            continue
+
         self.tags.append(Tag(tag, tagname, description,
                              self.filename, self.linenum))
     except (IOError, OSError), e:
diff --git a/tools/releasetools/sign_target_files_apks b/tools/releasetools/sign_target_files_apks
index 5fca691..5353063 100755
--- a/tools/releasetools/sign_target_files_apks
+++ b/tools/releasetools/sign_target_files_apks
@@ -204,6 +204,17 @@
   except KeyError:
     raise ExternalError("can't read META/otakeys.txt from input")
 
+  misc_info = common.LoadInfoDict(input_tf_zip)
+
+  extra_recovery_keys = misc_info.get("extra_recovery_keys", None)
+  if extra_recovery_keys:
+    extra_recovery_keys = [OPTIONS.key_map.get(k, k) + ".x509.pem"
+                           for k in extra_recovery_keys.split()]
+    if extra_recovery_keys:
+      print "extra recovery-only key(s): " + ", ".join(extra_recovery_keys)
+  else:
+    extra_recovery_keys = []
+
   mapped_keys = []
   for k in keylist:
     m = re.match(r"^(.*)\.x509\.pem$", k)
@@ -217,15 +228,18 @@
     print "for OTA package verification"
   else:
     mapped_keys.append(
-        OPTIONS.key_map["build/target/product/security/testkey"] + ".x509.pem")
+        OPTIONS.key_map.get("build/target/product/security/testkey",
+                            "build/target/product/security/testkey")
+        + ".x509.pem")
     print "META/otakeys.txt has no keys; using", mapped_keys[0]
 
   # recovery uses a version of the key that has been slightly
   # predigested (by DumpPublicKey.java) and put in res/keys.
+  # extra_recovery_keys are used only in recovery.
 
   p = common.Run(["java", "-jar",
                   os.path.join(OPTIONS.search_path, "framework", "dumpkey.jar")]
-                 + mapped_keys,
+                 + mapped_keys + extra_recovery_keys,
                  stdout=subprocess.PIPE)
   data, _ = p.communicate()
   if p.returncode != 0:
@@ -234,6 +248,7 @@
 
   # SystemUpdateActivity uses the x509.pem version of the keys, but
   # put into a zipfile system/etc/security/otacerts.zip.
+  # We DO NOT include the extra_recovery_keys (if any) here.
 
   tempfile = cStringIO.StringIO()
   certs_zip = zipfile.ZipFile(tempfile, "w")