Complete support for loading classes from a DEX file.

Change-Id: I1b9aa105fc78df170e83b259d8d04317c296a1b5
diff --git a/Android.common.mk b/Android.common.mk
index cc870d4..5bb20fa 100644
--- a/Android.common.mk
+++ b/Android.common.mk
@@ -44,6 +44,7 @@
 	src/dex_file.cc \
 	src/dex_instruction.cc \
 	src/memory_region.cc \
+	src/object.cc \
 	src/raw_dex_file.cc \
 	src/runtime.cc