Changes from version gtk-mac-integration-2.0.8 to version
        gtk-mac-integration-2.1.0

* Add bit-compiled translation files to gitignore.
* Convert translation handling to gettext.
* Remove obsolete dependency on gnome-common.
* Update documentation URL.
* Commit documentation so that it appears at
       https://jralls.github.io/gtk-mac-integration.
* Change Spanish translation of 'Quit'.
* Set PREFIX to default_prefix if --prefix isn't set.