vold: Clean up asec command response and add support for 'StorageBusy'

Signed-off-by: San Mehat <san@google.com>
diff --git a/Android.mk b/Android.mk
index 9036f78..bdb2325 100644
--- a/Android.mk
+++ b/Android.mk
@@ -24,7 +24,8 @@
                   geom_mbr_enc.c                       \
                   Fat.cpp                              \
                   Loop.cpp                             \
-                  Devmapper.cpp
+                  Devmapper.cpp                        \
+                  ResponseCode.cpp
 
 LOCAL_MODULE:= vold