[clutter/msvc-support] (7 commits) ...Merge branch 'master' into msvc-support

[Chun-wei Fan <fanchunwei src gnome org>]

Summary of changes:

  4780140... build: Create and install clutter-glx pkg-config file (*)
  2dc8e2f... Annotate ClutterTexture::load-finished with the correct typ (*)
  0a83e03... doc/RELEASING: Fix the check for diffs from origin/master (*)
  aacdbb4... win32: use typesafe cogl_win32_renderer_handle_event (*)
  cc58083... backend-cogl: update in line with Cogl API change (*)
  8bc265d... paint-volume: remove more is_axis_aligned assertions (*)
  b1ff3f7... Merge branch 'master' into msvc-support

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