Prepare push to trunk.  Now working on version 3.23.1.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/60513010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17516 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert r17152 - "Revert r17018 - "Turn on handle zapping for release builds""

Apparently, this wasn't the cause for dromaeo regressions.

> BUG=none
> R=jkummerow@chromium.org
>
> Review URL: https://codereview.chromium.org/26457002

R=verwaest@chromium.org, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/36843002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17519 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
[Object.observe] rename intrinsic change record types for consitency.

Note the spec now reflects the updated naming:

http://wiki.ecmascript.org/doku.php?id=harmony:observe_spec_changes

R=rossberg@chromium.org, rossberg
BUG=v8:2940

Review URL: https://codereview.chromium.org/46043020

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17520 ce2b1a6d-e550-0410-aec6-3dcde31c8c00