[cutter/f20] (4 commits) ...Drop gstreamer package support

[kenhys]

Summary of changes:

  ba96764... Fix doc paths in man pages when doc dir is unversioned (#99 (*)
  52da857... Update to Cutter 1.2.3 (*)
  214b00c... Drop needless patches (*)
  a5ba0bb... Drop gstreamer package support (*)

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