[gnome-software] (3 commits) Non-fast-forward update to branch wip/hughsie/xdg-app

[Richard Hughes <rhughes src gnome org>]

The branch 'wip/hughsie/xdg-app' 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:

  c5aa9a3... Add initial untested xdg-app support
  34b8e59... Use the library from xdg-app rather than spawning a process

Commits added to the branch:

  e970dea... Update gtk-style-hc.css as well (*)
  d0056da... trivial: Use g_autofree (*)
  1199488... Add initial xdg-app support

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