[gimp/f17] (5 commits) ...actually upload source tarball (take 2)

[Nils Philippsen]

Summary of changes:

  4a37c12... update BR: librsvg2-devel >= 2.36.0 (*)
  3e47af7... fix pre/git release macros for stable versions (*)
  5473ce2... version 2.8.0 (*)
  82d38ce... actually upload source tarball (*)
  4b2f5ea... actually upload source tarball (take 2) (*)

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