[gtk] (4 commits) Non-fast-forward update to branch single-key-compose

[Matthias Clasen <matthiasc src gnome org>]

The branch 'single-key-compose' 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:

  a00db0f... input: Accept short compose sequences
  b211bd0... Regenerate builtin sequences
  8156b01... Update test results
  185e242... Add a test for short compose sequences

Commits added to the branch:

  8931169... input: Accept short compose sequences
  6be2768... Regenerate builtin sequences
  aac3f18... Update test results
  72d6241... Add a test for short compose sequences