[cogl] (38 commits) Non-fast-forward update to branch wip/vts

[Robert Bragg <rbragg src gnome org>]

The branch 'wip/vts' 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:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  8839290... Add libvts (Virtual Terminal Session) api

Commits added to the branch:

  0d9684c... onscreen: Adds swap_buffers_with_damage api (*)
  aa412b9... cogland: Correctly handle commits without attaching a new b (*)
  15c58ce... cogland: Embed the wl_surface struct directly into CoglandS (*)
  99cf15b... cogland: Listen for Expose events when Cogl is using X (*)
  aa5ba32... Include cogl-defines.h before checking COGL_HAS_ define (*)
  57a7991... xlib: Don't crash just because the display doesn't expose R (*)
  d5261ec... Fix the WGL winsys to not use deprecated feature flags (*)
  99a7f84... win32: Automatically process windows messages when using a  (*)
  81c1ce0... poll: Add general way to hook into mainloop without fd (*)
  e6d3747... Add fence API (*)
  41c54fc... cogl-error.h: add COGL_BEGIN_DECLS/COGL_END_DECLS (*)
  ab59c3a... wayland: Don't set the surface to toplevel until it is show (*)
  88eed85... Rename _cogl_framebuffer_dirty to _cogl_framebuffer_mark_mi (*)
  945689a... wayland: Don't delay resize if nothing is drawn since last  (*)
  85c5a9b... Add a callback to get dirty events from a CoglOnscreen (*)
  108e3c5... Update some of the examples to use the dirty callback (*)
  ba79020... gl: #ifdef guard ARB_sync api in cogl-all-functions.h (*)
  a3bc2e7... Adds initial Emscripten support to Cogl (*)
  a8b1e2e... emscripten-hello: improve mainloop integration (*)
  f67c7ea... pipeline: ignore driver in blend state tracking (*)
  79252d4... check the wayland buffer format when creating texture (*)
  edcbeaf... color: Add HSL conversion functions (*)
  32d67c2... tests: Add a test for the RGB <-> HSL functions (*)
  d0290eb... Fix a warning in the EGL winsys (*)
  ab2ae18... pipeline: improve real_blend_enable checks (*)
  c15d91f... conform: Add color attribute based blending test (*)
  9047cce... tests: Adds our first white-box unit test (*)
  693c85e... units: remove test-bitmask and add UNIT_TEST instead (*)
  4716312... pipeline: only maintain breadcrumb for debug builds (*)
  e5b2454... build: fix building test-gles2-context (*)
  8495d9c... Add support for per-vertex point sizes (*)
  8aadfd8... Separate out CoglPath api into sub-library (*)
  e07d0fc... generalize driver description and selection (*)
  2c167b7... Adds "webgl" driver (*)
  ec7b636... webgl: use DEPTH_STENCIL_ATTACHMENT (*)
  1f82399... display: add _set_onscreen_template() api
  ad5534e... Removes the CoglSwapChain api
  f7f17ae... Add libvts (Virtual Terminal Session) api

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