Add centos support for build
Only build a candidate package for main if the version isn't an RC (contains an alpha)
Refactor to support both rpm and deb versioning
Join commands correctly, rpm repack commands
Add a post build step to verify the generated .deb looks sane (closes #7)
DRY, add a post build step to verify the generated .rpm looks sane #44
Rake tasks don't apply when building locally
Merge branch 'master' into support_centos

Conflicts:
	Rakefile
Merge branch 'support_centos'