MIPS: Deoptimizer support for hydrogen stubs that accept a variable number of arguments.

Port r14111 (29157ad7)

BUG=

Review URL: https://codereview.chromium.org/13461013

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14120 ce2b1a6d-e550-0410-aec6-3dcde31c8c00