Properly cleanup the transcendental subcaches.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/18487002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15437 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Turn escape analysis into a proper HPhase.

R=danno@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/18476004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15438 ce2b1a6d-e550-0410-aec6-3dcde31c8c00