[pango] (3 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master' 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:

  7489aa3... layout: Try to avoid another attrlist duplication
  10779bf... layout: Unconditionally unref attr lists
  b8f6617... test-common: Ignore null attr lists
  9289ed3... layout: Handle empty attr lists like NULL ones

Commits added to the branch:

  4d782aa... layout: Unconditionally unref attr lists
  46e6994... test-common: Ignore null attr lists
  b89be11... layout: Handle empty attr lists like NULL ones