Fix JSXTransformer when therubyracer is used by execjs#16

Merged

zpao merged 2 commits intoreactjs:masterfrom

quark-zju:fix-with-therubyracer

Dec 2, 2013

Commits on Nov 27, 2013

Remove cached files before testing.
quark-zju
committed

Commits on Nov 28, 2013

Fix JSX when execjs uses therubyracer.
quark-zju
committed