Auto-generate operator<< for enum ::art:Class::Status.

This requires a bit more work in the script to support
enums nested inside classes.

Change-Id: Id0e3561c3675214f74f47ac9f36ba82c41fa775d
diff --git a/build/Android.common.mk b/build/Android.common.mk
index aeb4c79..bcac723 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -325,6 +325,7 @@
 	src/jdwp/jdwp.h \
 	src/jdwp/jdwp_constants.h \
 	src/mutex.h \
+	src/object.h \
 	src/thread.h \
 	src/verifier/method_verifier.h