(maint) Add a Gemfile for acceptance testing
Adds support for building facter on RHEL7 via spec.
Merge branch 'stable'
(packaging) Update FACTERVERSION to 1.7.4
Merge tag '1.7.4'

1.7.4

* tag '1.7.4':
  (packaging) Update FACTERVERSION to 1.7.4
Merge pull request #573 from dyarnell/rhel7

Adds support for building facter on RHEL7 via spec.