Update ruby193-rubygem-fast_gettext to 0.8.0-13.el6
Update rubygem-fast_gettext to 0.8.0-13.el6
Update rubygem-fast_gettext to 0.8.0-13.fc19

- fix fedora 19 builds, add rubygems-devel dependency (jmontleo@redhat.com)
- update build dependencies (jmontleo@redhat.com)
- update build dependencies (jmontleo@redhat.com)