[libwnck] (3 commits) Non-fast-forward update to branch wip/muktupavels/wnck-handle-2

[Alberts Muktupāvels <muktupavels src gnome org>]

The branch 'wip/muktupavels/wnck-handle-2' 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:

  3316383... util: move default icon size to WnckHandle
  e3037ab... xutils: move event filter to WnckHandle

Commits added to the branch:

  bd8ab37... xutils: move WnckIconCache to its own file (*)
  81576e7... util: move default icon size to WnckHandle
  a2cc13b... xutils: move event filter to WnckHandle

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