Add funtoo guest support.  Based heavily on https://github.com/mitchellh/vagrant/pull/1840
Revert "Add funtoo guest support.  Based heavily on https://github.com/mitchellh/vagrant/pull/1840"

This reverts commit 3559c0808607e90237c3f86c750404b97e7a531c.
Add funtoo guest support. Based heavily on https://github.com/mitchellh/vagrant/pull/1840
Merge pull request #2734 from seginoviax/funtoo

New guest: Funtoo