[mutter] (9 commits) Non-fast-forward update to branch wip/texture-purge-on-nvidia

[Ray Strode <halfline src gnome org>]

The branch 'wip/texture-purge-on-nvidia' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  69bbb87... wayland: force X clients to redraw on resume
  2899da6... backends/native: force texture updates
  90d0b4e... fixup! wip! force texture updates
  d349ca0... backend: switch to using generated logind proxy
  945fbcd... backend: add signals for reporting suspend and resume
  44dcd07... compositor: save and restore textures on suspend

Commits added to the branch:

  a566c66... cogl: add new UNSTABLE_TEXTURES feature
  f6e8e86... backend: switch to using generated logind proxy
  53d63ea... backend: add signals for reporting suspend and resume
  45c5f55... wayland: force X clients to redraw on resume
  f9907d1... backends/native: emit gl-video-memory-purged when becoming 
  6ff42c2... backends/native: update glyph cache on resume
  2fc0652... backends/native: update cursor on resume
  395d463... background: purge all background textures on suspend
  625ea86... MetaShapedTexture: save and restore textures on suspend