[gtk+] (10 commits) Non-fast-forward update to branch wip/ebassi/gles

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'wip/ebassi/gles' 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:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  bab5452... tests: Add GLES shaders to testglarea
  b18bd5c... tests: Add GLES support to GtkGears
  06dca70... demo: Add GLES support to the GtkGLArea demo
  fe79730... glarea: Relay the use-es flag to context creation
  43d210a... glarea: Use the appropriate texture format for GLES
  1e6b7b3... docs: Clarify the platform-dependency of GdkGLContext:use-e
  9c4434a... docs: Add new GdkGLContext symbols
  7c6837f... docs: Add new GtkGLArea symbols
  ed817e3... gl: Add fallback for missing subimage unpacking
  7da0f6c... x11: Do not use GLX_EXT_texture_from_pixmap on OpenGL ES
  ba5da24... gl: Use a uniform to flip R and B colors on GLES

Commits added to the branch:

  1379b4b... gl: Add fallback for missing subimage unpacking
  f848450... gl: Use a uniform to flip R and B colors on GLES
  a92ba06... tests: Add GLES shaders to testglarea
  b993c7d... tests: Add GLES support to GtkGears
  872b511... demo: Add GLES support to the GtkGLArea demo
  971998d... glarea: Relay the use-es flag to context creation
  b45c7b5... glarea: Use the appropriate texture format for GLES
  79a7e88... docs: Clarify the platform-dependency of GdkGLContext:use-e
  044b5aa... docs: Add new GdkGLContext symbols
  414e86f... docs: Add new GtkGLArea symbols