Merge r3481 to branches/1.3 to increase the number of maps...

src/heap-inl.h

Index: src/heap-inl.h
===================================================================
--- src/heap-inl.h	(revision 3546)
+++ src/heap-inl.h	(working copy)
@@ -116,6 +116,12 @@
 #endif
   Object* result = map_space_->AllocateRaw(Map::kSize);
   if (result->IsFailure()) old_gen_exhausted_ = true;
+#ifdef DEBUG
+  if (!result->IsFailure()) {
+    // Maps have their own alignment.
+    CHECK((OffsetFrom(result) & kMapAlignmentMask) == kHeapObjectTag);
+  }
+#endif
   return result;
 }