Adding configurable value for clearing the sbt buffer before running a
new command.
Allow drive letters in error locations.

Necessary for windows paths like "C:\foo\src\main\scala\..."
Merge pull request #3 from Toxaris/drive-letters

Allow drive letters in error locations.
Merge branch 'master' of git://github.com/jwinder/sbt-mode
Merge remote-tracking branch 'refs/remotes/hvesalai/master'

Conflicts:
	sbt-mode.el