Handlefy Descriptor and other code in objects.cc

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/228333003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20628 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add V8 releases script.

This script retrieves the history of all V8 branches and trunk revisions and their corresponding Chromium revisions.

TEST=tools/push-to-trunk/releases.py -c <chrome path> --csv test.csv

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/227583002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20629 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge