mitchellh/vagrant — pull request #1913 by mightybs (2013-07-09 20:54:04+00:00)
Title: Stop ruby regex error on "Fedora Core" releases.

The version_number regex was causing an error because my /etc/redhat-release looks like this:

Fedora Core release 6 (Zod)

This fix allowed initialize to run just fine on my ridiculously old release.