[cogl] (10 commits) Created branch lionel/cogl-gst-1.18

[Lionel Landwerlin <llandwerlin src gnome org>]

The branch 'lionel/cogl-gst-1.18' was created.

Summary of new commits:

  1c48fb7... path: remove internal inclusion not needed
  d49df01... path: create introspection files for 1.0 and 2.0 APIs
  7b5a6db... cogl-gst: video-sink: use intended GStreamer API for data/s
  66ef204... cogl-gst: video-sink: rework color conversion to care about
  873003c... cogl-gst: video-sink: add video balance support
  0273658... cogl: winsys: glx: fix valgrind complaint
  36fe769... cogl-gst: video-sink: rework caps exposure
  20b9ab6... cogl-gst: video-sink: add shutdown method on renderers
  8beb3cb... cogl-gst: video-sink: add gl upload support
  24294d7... wip: video-sink: add navigation support