force accessor pair accesses backed by simple api calls to be generic accesses when crankshafted

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/34773003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17332 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Make macro-assembler-x64 deal with handles to objects in new space by default.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/34753004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17333 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Crankshaft builtins.

Enable optimizing compiler for V8 built-ins. Also fixes an issue uncovered in
x64 codegen.

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

Review URL: https://codereview.chromium.org/34503003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17334 ce2b1a6d-e550-0410-aec6-3dcde31c8c00