[gtk] (12 commits) Non-fast-forward update to branch wip/otte/gl-hdr

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/gl-hdr' 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:

  e672d6f... gdk: Make GDK_DEBUG GL backend selection global
  41561d6... widget-factory: Name the images pages
  aee566e... surface: Use g_clear_thing()
  8e48568... gdk: Add a request_hdr argument to begin_frame()
  0bd184f... gdk: Add GDK_DEBUG=hdr
  039b568... egl: Move initialization code and port Wayland
  db4510a... x11: Port to shared EGL code
  d9806d5... glcontext: The content cannot be the current context
  2787704... surface: Add a private struct
  c040629... display: Get carried away by extension checker
  5598748... egl: Move EGLSurface handling to GdkSurface

Commits added to the branch:

  5d60fd4... pathbar: Use correct marshaler
  40c8dc3... gdk: Make GDK_DEBUG GL backend selection global
  a68252c... widget-factory: Name the images pages
  5967f75... surface: Use g_clear_thing()
  0820828... gdk: Add a request_hdr argument to begin_frame()
  613bfce... gdk: Add GDK_DEBUG=hdr
  540cb31... egl: Move initialization code and port Wayland
  66b03ad... x11: Port to shared EGL code
  79a5d51... glcontext: The content cannot be the current context
  05f26f9... surface: Add a private struct
  9bdf18e... display: Get carried away by extension checker
  272ffb1... egl: Move EGLSurface handling to GdkSurface