Enable object evacuation verifier. Perform verification of evacuation candidates when sweeping is done.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/407893004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22508 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add CXX cross-compile detection into Makefile after it was removed from gyp.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/405113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22509 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Rename CurrentMapForDeprecated to TryUpdate, and introduce Map::Update which potentially deprecates

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/401243003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22510 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reduce usage of StoreMode.

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/409603002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22511 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
[Arm]: Assert that movw/movt is only emitted for Armv7 targets

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/402923002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22512 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge