Implement a graph coloring register allocator

Test: m test-art-host

Change-Id: I8c0d77f339ab02b33588a54b96ecce5c8322cfce
diff --git a/compiler/Android.mk b/compiler/Android.mk
index 8261a87..7ada749 100644
--- a/compiler/Android.mk
+++ b/compiler/Android.mk
@@ -67,8 +67,9 @@
 	optimizing/parallel_move_resolver.cc \
 	optimizing/prepare_for_register_allocation.cc \
 	optimizing/reference_type_propagation.cc \
-	optimizing/register_allocator.cc \
 	optimizing/register_allocation_resolver.cc \
+	optimizing/register_allocator.cc \
+	optimizing/register_allocator_graph_color.cc \
 	optimizing/register_allocator_linear_scan.cc \
 	optimizing/select_generator.cc \
 	optimizing/sharpening.cc \