Add moonscript and traceback rewriting support to busted.
Merge branch 'master' of git://github.com/Olivine-Labs/busted

Conflicts:
	src/core.lua
Merge branch 'master' of git://github.com/Olivine-Labs/busted
Fix traceback rewriting for moonscript.
Whoops, left out local declaration.
Merge pull request #121 from Eloff/master

Fix moonscript error rewriting