[libwnck] (17 commits) Non-fast-forward update to branch wip/muktupavels/icons

[Alberts Muktupāvels <muktupavels src gnome org>]

The branch 'wip/muktupavels/icons' 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:

  0516908... icon-cache: add invalidation function
  1cbd442... icon-cache: store xwindow in struct
  5b0424e... icon-cache: store also WnckScreen in struct
  d724d6a... icon-cache: remove size parameters from read_icons
  552ff23... icon-cache: add functions to get cached icons
  2bc8b09... window: remove icons from private struct
  5cf63b1... application: remove icons from private struct
  db123a8... class-group: get icons in getters
  f9544de... icon-cache: turn into a GObject
  658e8ef... icon-cache: add invalidated signal
  03fdd67... icon-cache: read icons in getters
  c242140... application: load icons only in getters
  6e4f131... window: load icons only in getters
  debbf7c... icon-cache: make get_icon_invalidated static
  0038bd6... icon-cache: make read_icons static
  72bfca4... icon-cache: read only requested size

Commits added to the branch:

  6147abd... Release: 43.0 (*)
  d0251d9... icon-cache: add invalidation function
  4bb235b... icon-cache: store xwindow in struct
  d317f12... icon-cache: store also WnckScreen in struct
  c46f752... icon-cache: remove size parameters from read_icons
  ad241d4... icon-cache: add functions to get cached icons
  98b7453... window: remove icons from private struct
  804ea4a... application: remove icons from private struct
  c192b7d... class-group: get icons in getters
  2279e70... icon-cache: turn into a GObject
  61399b4... icon-cache: add invalidated signal
  e5a24a1... icon-cache: read icons in getters
  7bdc587... application: load icons only in getters
  236e886... window: load icons only in getters
  27a6aed... icon-cache: make get_icon_invalidated static
  d76b53b... icon-cache: make read_icons static
  6ffa36f... icon-cache: read only requested size

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