Minor - Reuse existing code
Minor/ignore - Removed trailing whitespace
Upgraded to LESS 1.6.0 and fixed JavaScript errors

LESS 1.4+ was throwing "Cannot call method 'charAt' of undefined" errors in getLocation() when called from LessError().  Used fix from https://gist.github.com/exortech/2306083
Bumped version from 2.6.6 to 2.6.7
Updated lessc-plugin.zip