Update ruby-gnome2 packages to 3.1.1.

pkgsrc changes:
* add graphics/ruby-gnome2-clutter-gdk

Upstream changes:
(from https://github.com/ruby-gnome2/ruby-gnome2/blob/3.1.1/NEWS)

== Ruby-GNOME2 3.1.1: 2017-01-26

=== Changes

==== All

  * Improvements
    * Windows: Supported Ruby 2.4.

==== Ruby/GLib2

  * Improvements
    * (({GLib::DateTime})): Added.
      [GitHub#961][GitHub#965]
      [Patch by cedlemo]
    * (({GLib::TimeZone})): Added. [GitHub#963][Patch by cedlemo]
    * Stopped to show "message", "info" and "debug" level logs by default.
      You can enable them by (({$DEBUG = true})).
      [GitHub#981][Reported by PeterWAWood]
    * Windows: Updated bundled PCRE to 8.40.

==== Ruby/GObjectIntrospection

  * Improvements
    * Supported outputting (({guint8})) array.
    * Supported converting (({equal})) method to (({==})) method.
    * Supported auto (({Enumerable})) inclusion for classes and
      modules that have (({each})) method.

==== Ruby/GIO2

  * Improvements
    * (({Gio::Settings#initialize})): Added backward compatible API
      again.
  * Fixes
    * Supported GIO 2.38 or earlier again.

==== Ruby/Pango

  * Fixes
    * (({Pango::LayoutLine#x_to_index})): Fixed a crash bug.
    * Windows: Updated bundled HarfBuzz to 1.4.1.
    * Windows: Updated bundled ICU to 58.2.

==== Ruby/GdkPixbuf2

  * Improvements
    * (({GdkPixbuf::Pixbuf#save_to_buffer})): Supported again but it's
      deprecated. Use (({GdkPixbuf::Pixbuf#save})) instead.
    * Windows: Updated bundled gdk-pixbuf to 2.36.4.

==== Ruby/GDK3

  * Improvements
    * Windows: Updated bundled GTK+ to 3.22.7.

==== Ruby/GTK3

  * Improvements
    * (({Gtk::TreeViewColumn#initialize})): Supported option Hash.
      [GitHub#958][Patch by Detlef Wagner]
    * Updated samples. [Patch by cedlemo]
    * (({Gtk::Dialog#get_widget_for_response_id})): Supported
      (({Symbol})) as response ID.
      [GitHub#978][Patch by Detlef Wagner]
    * (({Gtk::Container#add})): Changed to return (({self})) again.
    * Windows: u

==== Ruby/Poppler

  * Fixes
    * (({Poppler::IndexIter})): Fixed a crash bug.
    * (({Poppler::IndexIter#child})): Added a missing (({NULL}))
      check.
    * Fixed types of action classes. They must be (({GLib::Boxed})).

==== Ruby/GStreamer

  * Improvements
    * Windows: Updated bundled GStreamer to 1.10.2.

==== Ruby/ClutterGStreamer

  * Improvements
    * Windows: Updated bundled Clutter-GStreamer to 3.0.22.

==== Ruby/GtkSourceView3

  * Improvements
    * Windows: Updated bundled GtkSourceView to 3.22.2.

==== Ruby/GSF

  * Improvements
    * Windows: Updated bundled GSF to 1.14.41.

=== Thanks

  * Detlef Wagner
  * cedlemo
  * PeterWAWood

(tsutsui)