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BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/22862009

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Improve detection of C++11 features.

Also improve detection of V8_INFINITY while we're at it.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/23323003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Adding missing operator!= for Handle and Persistent.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22932004

Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.21.2.

R=hpayer@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/23242009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00