Rename common to android

Rename the "common" package to "android", because common is too
generic.  Also removes all android.Android naming stutter.

Ran:
gomvpkg -from 'android/soong/common' -to 'android/soong/android'
gorename -from '"android/soong/android".AndroidModuleContext' -to 'ModuleContext'
gorename -from '"android/soong/android".AndroidBaseContext' -to 'BaseContext'
gorename -from '"android/soong/android".AndroidModuleBase' -to 'ModuleBase'
gorename -from '"android/soong/android".AndroidBottomUpMutatorContext' -to 'BottomUpMutatorContext'
gorename -from '"android/soong/android".AndroidTopDownMutatorContext' -to 'TopDownMutatorContext'
gorename -from '"android/soong/android".AndroidModule' -to 'Module'

Change-Id: I3b23590b8ce7c8a1ea1139411d84a53163288da7
diff --git a/cc/mips64_device.go b/cc/mips64_device.go
index 8f85b47..1bd6a3c 100644
--- a/cc/mips64_device.go
+++ b/cc/mips64_device.go
@@ -17,7 +17,7 @@
 import (
 	"strings"
 
-	"android/soong/common"
+	"android/soong/android"
 )
 
 var (
@@ -87,7 +87,7 @@
 )
 
 func init() {
-	common.RegisterArchFeatures(common.Mips64, "mips64r6",
+	android.RegisterArchFeatures(android.Mips64, "mips64r6",
 		"rev6")
 
 	pctx.StaticVariable("mips64GccVersion", mips64GccVersion)
@@ -185,7 +185,7 @@
 	return "${mips64ClangLdflags}"
 }
 
-func mips64ToolchainFactory(arch common.Arch) Toolchain {
+func mips64ToolchainFactory(arch android.Arch) Toolchain {
 	return &toolchainMips64{
 		cflags:               "${mips64Cflags}",
 		clangCflags:          "${mips64ClangCflags}",
@@ -195,5 +195,5 @@
 }
 
 func init() {
-	registerDeviceToolchainFactory(common.Mips64, mips64ToolchainFactory)
+	registerDeviceToolchainFactory(android.Mips64, mips64ToolchainFactory)
 }