Switch default gcc toolchain from 4.4.3 to 4.6.

Switch both arm-linux-androideabi toolchainand arm-eabi toolchain.

Change-Id: I7b2771fe684853ab37e3b5b7cfe4146f9f901e02
diff --git a/core/dumpvar.mk b/core/dumpvar.mk
index 87f7086..0f7dd8f 100644
--- a/core/dumpvar.mk
+++ b/core/dumpvar.mk
@@ -10,18 +10,19 @@
 endif
 
 # Add the ARM toolchain bin dir if it actually exists
-ifneq ($(wildcard $(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin),)
+ifneq ($(wildcard $(PWD)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-linux-androideabi-4.6/bin),)
 	# this should be copied to HOST_OUT_EXECUTABLES instead
-	ABP:=$(ABP):$(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-linux-androideabi-4.4.x/bin
+	ABP:=$(ABP):$(PWD)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-linux-androideabi-4.6/bin
 endif
 
 # Add the x86 toolchain bin dir if it actually exists
 ifneq ($(wildcard $(PWD)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-android-linux-4.4.3/bin),)
 	# this should be copied to HOST_OUT_EXECUTABLES instead
-	ABP:=$(ABP):$(PWD)/prebuilts/gcc//$(HOST_PREBUILT_TAG)/x86/i686-android-linux-4.4.3/bin
+	ABP:=$(ABP):$(PWD)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/i686-android-linux-4.4.3/bin
 endif
 ANDROID_BUILD_PATHS := $(ABP)
 ANDROID_PREBUILTS := prebuilt/$(HOST_PREBUILT_TAG)
+ANDROID_GCC_PREBUILTS := prebuilts/gcc/$(HOST_PREBUILT_TAG)
 
 # The "dumpvar" stuff lets you say something like
 #