[gdk-pixbuf] (6 commits) Non-fast-forward update to branch issue-128

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'issue-128' 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:

  d7837e0... Define _XOPEN_SOURCE properly on SunOS

Commits added to the branch:

  35dcd72... JPEG: skip bytes during incremental load (*)
  e3adcf0... tests: Skip GIF test when the format is not supported (*)
  19eed7d... tests: Skip tests when the ref format is unsupported (*)
  15cd65a... tests: Skip composite test when PNG is unsupported (*)
  7f0b214... tests: Conditionally build and run tests (*)
  f57bec3... Define _XOPEN_SOURCE properly on SunOS

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