Log Message:
Update ruby-rcairo to 1.12.2.

Release 1.12.2 (2012-06-03) Kouhei Sutou <kou@cozmixng.org>)
============================================================

Improvements
------------

  * Added Cairo::Device.supported?.
    [GitHub#11] [Reported by Cédric Boutillier]
  * Added Cairo::Device.gl_texture_supported?.
  * Added Cairo::Surface.supported?.
  * Defined all surfaces even if a surface isn't available. Use
    Cairo::Surface.XXX_supported? method to check surface
    availability.
  * Added Cairo::Pattern.xxx_supported?.
    [GitHub#12] [Reported by Mamoru Tasaka]
  * [experimental] Supported auto native package install.

Thanks
------

  * Cédric Boutillier
  * Mamoru Tasaka

Release 1.12.1 (2012-03-31) Kouhei Sutou <kou@cozmixng.org>)
============================================================

Improvements
------------

  * Re-supported cairo < 1.10.0.
    [ruby-gnome2-devel-en] Help me install my own program [Eric C.]

Fixes
-----

  * Fixed a problem that an unresolved symbol is referenced.

Thanks
------

  * Eric C.

Release 1.12.0 (2012-03-25) Kouhei Sutou <kou@cozmixng.org>)
============================================================

Improvements
------------

  * Supported cairo 1.12.0.
    * Cairo::Surface#supported_mime_type?
    * Cairo::Surface#create_similar_image
    * Cairo::Surface#map_to_image
    * Cairo::Surface#unmap_to_image
    * Cairo::RecordingSurface#extents
    * Cairo::MeshPattern
    * Cairo::RasterSourcePattern
    * Cairo::MimeType::UNIQUE_ID
  * Supported glesv2 surface.

Fixes
-----

  * Fixed a bug that Cairo::HINT_METRICS_ON can't be specified. #8
    [Vasily Fedoseyev]

Thanks
------

  * Vasily Fedoseyev