Code refactoring: Split thread.cc into thread.cc and runtime_support.cc.

Change-Id: I8484ee2993a2eb927ebba1f7b9db4709d16dad00
diff --git a/build/Android.common.mk b/build/Android.common.mk
index 1188d12..1b65971 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -146,10 +146,11 @@
 	src/sun_misc_Unsafe.cc \
 	src/thread.cc \
 	src/thread_list.cc \
+	src/runtime_support.cc \
 	src/utf.cc \
 	src/utils.cc \
 	src/zip_archive.cc \
-	src/runtime_support.S
+	src/runtime_support_asm.S
 
 LIBART_TARGET_SRC_FILES := \
 	$(LIBART_COMMON_SRC_FILES) \