Implement heap poisoning in ART's Optimizing compiler.

- Instrument ARM, ARM64, x86 and x86-64 code generators.
- Note: To turn heap poisoning on in Optimizing, set the
  environment variable `ART_HEAP_POISONING' to "true"
  before compiling ART.

Bug: 12687968
Change-Id: Ib3120b38cf805a8a50207a314b9ccc90c8d93740
diff --git a/runtime/reflection_test.cc b/runtime/reflection_test.cc
index 6f17e7d..9707fb8 100644
--- a/runtime/reflection_test.cc
+++ b/runtime/reflection_test.cc
@@ -505,6 +505,7 @@
 };
 
 TEST_F(ReflectionTest, StaticMainMethod) {
+  TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
   ScopedObjectAccess soa(Thread::Current());
   jobject jclass_loader = LoadDex("Main");
   StackHandleScope<1> hs(soa.Self());