[mutter] (19 commits) Non-fast-forward update to branch gbsneto/graphene-frustrum

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/graphene-frustrum' 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:

  3d31941... cluter/stage: Use 1.0 for z-near
  76e979c... clutter: Use graphene_matrix_inverse()
  f9fe822... clutter/stage: Simplify view setup
  53a07b3... clutter/stage: Use graphene_plane_t for clipping planes
  d48b546... clutter/actor: Remove unnecessary check
  6c082ce... clutter/actor: Trivial code shuffling
  51528fa... clutter: Remove ClutterPlane
  ce9cc0a... clutter/stage: Use graphene_frustum_t for clipping
  d04ede5... clutter/actor: Use switch instead of if/else
  bec61a6... clutter: Remove CLUTTER_CULL_RESULT_PARTIAL
  177eee4... clutter/stage: Don't setup view on pick
  c29221c... clutter/stage: Move clip frustum to ClutterPaintContext
  f565cb8... clutter/stage: Remove outdated comment
  af11a98... clutter/stage: Move pick cache invalidation out of setup
  3f0bad7... clutter/stage: Use multiple frusta depending on the redraw 
  c2ca07f... clutter/actor: Remove region culling
  84bcb18... clutter/stage: Simplify frustum setup function

Commits added to the branch:

  d665b0b... clutter/util: Generalize ROUND_TO_256THS
  c020343... clutter/actor: Round to 256ths when projecting for picking
  b7c8fcb... cluter/stage: Use 1.0 for z-near
  335610b... clutter: Use graphene_matrix_inverse()
  5898af1... clutter/stage: Simplify view setup
  d274ade... clutter/stage: Use graphene_plane_t for clipping planes
  8942894... clutter/actor: Remove unnecessary check
  87e5bae... clutter/actor: Trivial code shuffling
  760531b... clutter: Remove ClutterPlane
  995baf0... clutter/stage: Use graphene_frustum_t for clipping
  1148190... clutter/actor: Use switch instead of if/else
  31596fa... clutter: Remove CLUTTER_CULL_RESULT_PARTIAL
  541ac0c... clutter/stage: Don't setup view on pick
  5380008... clutter/stage: Move clip frustum to ClutterPaintContext
  1aed531... clutter/stage: Remove outdated comment
  d46f9e1... clutter/stage: Move pick cache invalidation out of setup
  fa7e311... clutter/stage: Use multiple frusta depending on the redraw 
  2a0283e... clutter/actor: Remove region culling
  327d5aa... clutter/stage: Simplify frustum setup function