[gnome-devel-docs/f22] (3 commits) ...Use license macro for COPYING and COPYING.GFDL

[David King]

Summary of changes:

  1f68082... Update to 3.15.4 (*)
  649246a... Preserve timestamps during install (*)
  e20fe91... Use license macro for COPYING and COPYING.GFDL (*)

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