C++11 support for ART.

We can now use auto, ranged based loops, etc..
This compiles, the phone boots, and the tests pass.

Depends on:
https://googleplex-android-review.googlesource.com/#/c/342487/

Change-Id: I8ba8ed47d2118e4711668c9c8f973a67beb261b2
diff --git a/runtime/gc/accounting/card_table.h b/runtime/gc/accounting/card_table.h
index f030626..a1936de 100644
--- a/runtime/gc/accounting/card_table.h
+++ b/runtime/gc/accounting/card_table.h
@@ -47,7 +47,7 @@
  public:
   static const size_t kCardShift = 7;
   static const size_t kCardSize = (1 << kCardShift);
-  static const uint8_t kCardClean  = 0x0;
+  static const uint8_t kCardClean = 0x0;
   static const uint8_t kCardDirty = 0x70;
 
   static CardTable* Create(const byte* heap_begin, size_t heap_capacity);