[cogl/msvc-support] (54 commits) ...Merge branch 'master' into msvc-support

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

Summary of changes:

  e69e41b... tests: Add a utility function for reading a pixel (*)
  63461c0... framebuffer: Add explicit buffer discard API (*)
  98e5a9c... Rework how we search for winsys configs (*)
  a74c81a... onscreen: Support multisample based onscreen rendering (*)
  dd7b16f... offscreen: Adds support for offscreen multisampling (*)
  405caca... examples: Adds a simple 4x msaa example (*)
  a8efe6a... framebuffer: Adds experimental _finish() API (*)
  a400aec... path: handle slice tex fallback using clip stack (*)
  fd2769f... clip-stack: Move path flushing code to cogl-clip-stack.c (*)
  7a834cf... primitive: Adds _cogl_primitive_draw api taking flags (*)
  f6daed6... clip: Adds cogl_clip_push_primitive API (*)
  6253b09... texture-2d-sliced: make CoglTexture2DSliced public (*)
  d92eaac... spans: only iterate spans within start-end range (*)
  583dc89... spans: remove unused intersect_start/end_local members (*)
  eef5013... primitives: make validate_first_layer_cb update override pi (*)
  d3114b1... pipeline-layer: fix win32 build issue (*)
  6da3bff... Remove beneign GL_MESA_ycbcr_texture check (*)
  b566170... make COGL_FEATURE_STENCIL_BUFFER private (*)
  abbd28f... make COGL_FEATURE_OFFSCREEN_BLIT a private feature (*)
  d045bea... make COGL_FEATURE_FOUR_CLIP_PLANES a private feature (*)
  69b44ac... make COGL_FEATURE_PBOS a private feature (*)
  c86f698... make COGL_FEATURE_VBOS a private feature (*)
  426c8b8... features: Support more than 32 features! (*)
  3c129f5... tests: ports test-wrap-modes.c to be standalone cogl test (*)
  c7098e4... texture-2d-sliced: simplify _foreach_sub_texture_in_region (*)
  c11036c... spans: Represent spans with floating point precision (*)
  1d8fd64... meta-texture: This publicly exposes CoglMetaTexture (*)
  1a30f4f... Adds support for a mirrored repeat wrap mode (*)
  bfb69d3... tests: Adds a really simple cogl-info program (*)
  7971934... framebuffer: split out CoglOnscreen code (*)
  a054b53... matrix: init flags before tmp  _translate in _look_at (*)
  fd67ddd... matrix: check DIRTY_TYPE flag in _cogl_matrix_print (*)
  b72f255... Start to reduce dependence on glib (*)
  e70071f... test-backface-culling: don't call _swap_buffers (*)
  90f1061... texture: Make CoglTextureRectangle experimentally public (*)
  648bec9... doc: Adds a cogl-texture-2d to the 2.0 reference manual (*)
  1ee861a... framebuffer: adds cogl_framebuffer_get_samples_per_pixel (*)
  18fb1ff... texture: Make CoglSubTexture experimental public api (*)
  98dc73a... spans: avoid normalize with normalize_factor of 1 (*)
  a8fbde4... doc: Adds some documentation for CoglIndices (*)
  8cf76ee... primitive: Add n_indices arg to _set_indices function (*)
  4c49f83... meta-texture: Support CLAMP_TO_EDGE (*)
  e907593... rectangles: rely on meta-texture api for clamping (*)
  e034446... docs: Adds various missing 2.0 sections and symbols (*)
  c3035c2... tests: Adds test_utils_check_region() utility api (*)
  b2b4eba... tests: ports test-sub-texture to not depend on clutter (*)
  5f7cdfe... crate: Use indices (*)
  d8c47e2... Remove inclusion of Xlib headers in Cogl headers (*)
  567661c... build: add missing header to fix make dist (*)
  a1b682e... Updated Spanish translation (*)
  757916f... doc: deprecate cogl_texture_get_rowstride() (*)
  8846470... test-just-vertex-shader: Sample a texture in the fragment p (*)
  00f0a66... Use the same number for n_tex_coord_attribs in all linked s (*)
  f756ec3... Merge branch 'master' into msvc-support

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