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