Includes the plumbing to make sure that all calls generated by the macroassembler for lithium will generate record a safepoint.

Review URL: http://codereview.chromium.org/6469053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6859 ce2b1a6d-e550-0410-aec6-3dcde31c8c00