[clutter] (19 commits) ...Make cogl_framebuffer_get_width/height experimental public API

[Robert Bragg <rbragg src gnome org>]

Summary of changes:

  114133c... paint-volume: Fix culling bug to handle partial culls (*)
  ec0b781... stage: Move _clutter_do_pick to clutter-stage.c (*)
  6484871... cogl: rename cogl-context.h cogl-context-private.h (*)
  c1ab28e... cogl: Adds experimental cogl_context_new() API (*)
  47e93d4... cogl: consolidate _create_context_driver + _features_init (*)
  e381a15... Remove unused _cogl_swap_buffers_notify (*)
  8177afa... remove unused _cogl_features_init prototype (*)
  dc5aa31... framebuffer: track context as CoglFramebuffer member (*)
  997ea0f... framebuffer: expose experimental cogl_get_draw_framebuffer (*)
  c739cb2... stage: adds internal_get_active_framebuffer API (*)
  8557bc3... actor: visualize culling with CLUTTER_PAINT=redraws
  532b563... Add temporary cogl-clutter.h to aid splitting out Cogl
  a908629... rename winsys files to be more consistent
  aa1a2cb... Adds renderer,display,onscreen-template and swap-chain stub
  d6f110a... Moves all GLX code down from Clutter to Cogl
  31da46c... Adds the ability to build Cogl standalone
  70767f0... Adds a --with-system-cogl config option for Clutter
  af366ad... backend: remove untested fruity backend
  6f69f77... Make cogl_framebuffer_get_width/height experimental public 

(*) This commit already existed in another branch; no separate mail sent