Initialize the bootstrap class path from standard sources.

Change-Id: Ib49d21f98fd76504e5d3675fc731261426ca84ed
diff --git a/build/Android.common.mk b/build/Android.common.mk
index 56b5db2..f92bc09 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -82,6 +82,7 @@
 	src/dex_instruction_visitor_test.cc \
 	src/jni_compiler_test.cc.arm \
 	src/object_test.cc \
+	src/runtime_test.cc \
 	src/space_test.cc
 
 TEST_TARGET_SRC_FILES := \