generate less sourceMaps
use old lang strings for 2.6 compatability

Ideally I'd like to get rid of these colons completely, but it's
probably too much effort right now. In the meantime, this should
silence the warnings on 2.6.
Merge pull request #177 from ds125v/hard_code_colon

use old lang strings for 2.6 compatability
Merge pull request #176 from jobyh/grunt-sourcemaps

generate less sourceMaps
patch for quote delimiter bug with --dirroot opt