[cogl/msvc-support] (24 commits) ...Merge branch 'master' into msvc-support

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

Summary of changes:

  efadc43... cogl-journal: Use a pool of vertex arrays (*)
  cb321e0... build: Don't use bash string substitution in configure.ac (*)
  891a9c3... Revert "quartz: Remove X11 ifdefs" (*)
  5a9b92a... Revert "Initial build of a Quartz winsys stub" (*)
  1e3f4f6... framebuffer: validate width/height in _set_viewport (*)
  80e7e0e... configure: remove the --enable-quartz option (*)
  ee7cc9e... Make CoglTexture2D public as experimental API (*)
  1ec8525... cogl-xlib: remove special cases for stub winsys (*)
  b380fed... Make stub winsys into a proper winsys backend (*)
  32e7c93... configure.ac: move the --enable-cairo check (*)
  be15bf7... Add internal _cogl_get_proc_address (*)
  52aada8... egl: Check EGL extension as early as possible (*)
  c9f1541... egl: check or EGL/eglext.h (*)
  60b2561... Add _cogl_egl_texture_2d_new_from_image API (*)
  8714d99... egl: Add x11 texture-from-pixmap support (*)
  a29a76d... Adds  _cogl_wayland_texture_2d_new_from_buffer API (*)
  656f28d... glx: make sure _cogl_winsys_get_proc_address is static (*)
  b934859... renderer: set winsys on renderer before ->renderer_connect (*)
  4a97fc0... egl: fix some #ifdef guards (*)
  43c4b21... Adds an example cogl wayland compositor (*)
  8c35a6b... remove _cogl_xlib_trap/untrap_errors wrappers (*)
  5022ec5... replace _xlib_add_filter use with _cogl_renderer API (*)
  bbfe8b8... gir: pass dep cflags to gobject introspection scanner (*)
  a8e0c27... Merge branch 'master' into msvc-support

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