(HI-273) Support bundler workflow on windows x64

Previously the Gemfile contained windows gem dependencies copy and
pasted from elsewhere.

Hiera only explicitly depends on the `win32-dir` gem to resolve
its data directory on windows, e.g. C:\ProgramData. As such the
Gemfile is updated to include that dependency.
Merge branch 'hi-273-stable' into stable

* hi-273-stable:
  (HI-273) Support bundler workflow on windows x64
(HI-273) Build architecture specific Windows gems

 - Ensure that packaging tasks correctly build the Hiera gem on Windows
   by including additional definitions
Merge pull request #199 from Iristyle/ticket/stable/hi-273-fix-gem-dependencies

(HI-273) Build architecture specific Windows gems
(RE-1497) Remove quantal from build_defaults

This commit removes quantal from all build defaults because it is end of
life. It removes the defaults from the build_defaults yaml.
Merge pull request #200 from clantant/RE-1497/master/srcs

(RE-1497) Remove quantal from build_defaults
(maint) Have Beaker add epel repo for rhel platforms during acceptance

Epel repo has been removed from our vcloud templates, but when testing
hiera from git source checkout, we need to be able to install git first,
and rhel5/centos5 does not have this package without epel enabled.  We
can remove this flag when we are no longer testing on rhel5, or no
longer need git (solely testing from packages).
Merge branch 'maint/stable/include-epel-for-acceptance' into stable

* maint/stable/include-epel-for-acceptance:
  (maint) Have Beaker add epel repo for rhel platforms during acceptance
(HI-285) Remove saucy from build defaults

This commit removes saucy from build defaults, it went EOL July 17, 2014