I don't think we need the COMMIT.backup anymore
Always clean before building, and have a consistent name for the .dmg
Merge branch 'master' of github.com:staticfloat/julia-nightly-packaging
Merge branch 'master' of github.com:staticfloat/julia-nightly-packaging

Conflicts:
	build_ubuntu.sh
Update dmg name
Merge branch 'master' of github.com:staticfloat/julia-nightly-packaging