Set CSS text after style element is added to DOM, to fix crash on IE < 9.
Merge pull request #2000 from David-Hari/master

Set CSS text after style element is added to DOM, to fix crash on IE < 9...
use graceful fs for file actions
Merge branch 'master' of https://github.com/cloudhead/less.js
Fix #1987. First, res may be null if we have an error with a URL. Second, if the URL has no protocol, use http
update some dependencies