Remove specialized raw Cell and Map allocators.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/30023003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make the message test suite run without slow asserts.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/39303004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17381 ce2b1a6d-e550-0410-aec6-3dcde31c8c00