[gtk] (3 commits) Non-fast-forward update to branch image-loading

[Matthias Clasen <matthiasc src gnome org>]

The branch 'image-loading' 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:

  4c36ecb... Add code to load jpegs
  0d08f2d... Load jpegs without gdk-pixbuf
  897f210... Add tests for the jpeg loader

Commits added to the branch:

  1a95687... Add code to load jpegs
  ed00415... Load jpegs without gdk-pixbuf
  060eea3... Add tests for the jpeg loader