Initial EPEL support. No version protection yet.
Merge branch 'master' into features/centos-epel-repo
EPEL 5 and 6 in link and hash dbs. Support in centos reqs.
Fix regexp to detect CentOS major version
Versioned EPEL support for CentOS in rvm pkg
Add forgotten basename to extract the filename from the URL
Merge master
swap out basename for equivalent shell string modifier
Merge pull request #1834 from rys/features/centos-epel-repo

Add EPEL yum repo support to CentOS 5 and 6