MIPS: Add support for Token::NE and Token::NE_STRICT to TokenToCondition.

Port r17239 (c203175f)

Original commit message:
This is required to be able to use these tokens with
HCompareNumericAndBranch.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/27516004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.22.15.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/27676002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Cosmetic: Add macros for NaN, undefined and Infinity to native js code.

Nobody should need to use $NaN, 0/0, 1/0 and void 0.

R=mvstanton@chromium.org
BUG=

Review URL: https://codereview.chromium.org/27491002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Enable calling the SetReference* & SetObjectGroupId functions with a Persistent<SubclassOfValue>.

This is needed for https://codereview.chromium.org/26792002/

BUG=
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/27512003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00