ART: Replace COMPILE_ASSERT with static_assert (runtime)

Replace all occurrences of COMPILE_ASSERT in the runtime tree.

Change-Id: I01e420899c760094fb342cc6cb9e692dd670a0b2
diff --git a/runtime/base/allocator.h b/runtime/base/allocator.h
index 3ca9ebb..30f7f12 100644
--- a/runtime/base/allocator.h
+++ b/runtime/base/allocator.h
@@ -119,7 +119,7 @@
 
   // Used internally by STL data structures.
   TrackingAllocatorImpl() throw() {
-    COMPILE_ASSERT(kTag < kAllocatorTagCount, must_be_less_than_count);
+    static_assert(kTag < kAllocatorTagCount, "kTag must be less than kAllocatorTagCount");
   }
 
   // Enables an allocator for objects of one type to allocate storage for objects of another type.