[libwnck] (17 commits) ...Merge branch 'gtk3'

[Vincent Untz <vuntz src gnome org>]

Summary of changes:

  b9dc400... pager: Use Cairo for drawing (*)
  e368853... pager: Let the expose function create the cairo_t (*)
  211a61d... Port to GTK3 (*)
  1857f00... tasklist: Reorganize how the glow button works (*)
  877d968... Make gtk3 version parallel-installable (*)
  495d0de... Fix Requires: (*)
  e264754... Version bump (*)
  27a6693... Fix build after size-request removal (*)
  73c4b64... ::draw doesn't own the cairo_t, so don't cairo_destroy it (*)
  27e7804... Fixed build replacing deprecated functions (#638201) (*)
  3f1609f... build: wnckprop requires -lX11 (*)
  08603cf... all: Code spacing fixes
  ab7419e... all: Remove deprecated API and change API that had deprecat
  8001611... tasklist: Clarify difference between reset & stop glow in c
  986bfba... build: Reset libtool versioning to 0
  d1f711d... build: Require gtk+-3 >= 2.91.5
  c9a156b... Merge branch 'gtk3'

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