Synced Scons with GYP build. ;-)

TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/11155005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12720 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

SConstruct

@@ -59,7 +59,7 @@ LIBRARY_FLAGS = {
       'CPPDEFINES': ['V8_INTERPRETED_REGEXP']
     },
     'mode:debug': {
-      'CPPDEFINES': ['V8_ENABLE_CHECKS', 'OBJECT_PRINT']
+      'CPPDEFINES': ['V8_ENABLE_CHECKS', 'OBJECT_PRINT', 'VERIFY_HEAP']
     },
     'objectprint:on': {
       'CPPDEFINES':   ['OBJECT_PRINT'],