Introduce a special kind of frames for construct frames, e.g.

Introduce a special kind of frames for construct frames, e.g.
the trampoline frames introduced for invoking functions through
the new keyword.
Review URL: http://codereview.chromium.org/7223

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@485 ce2b1a6d-e550-0410-aec6-3dcde31c8c00