GC Cleanup + Set max old generation size to 700MB on ia32 and max executable size to 128 MB (on ia32)
Review URL: http://codereview.chromium.org/7993003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00