Revert "Remove flags argument from EmitCallWithStub" and "MIPS: Remove flags argument from EmitCallWithStub."

This reverts commits r18598 and r18604 for breaking GC stress.

BUG=
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/133393003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18606 ce2b1a6d-e550-0410-aec6-3dcde31c8c00