[subsurface/f18] (3 commits) ...No need for the -c flag to %setup anymore

[Pierre-YvesChibon]

Summary of changes:

  507b892... Update to 3.1 (*)
  7f1f9e0... Fix the folder name (*)
  3552f38... No need for the -c flag to %setup anymore (*)

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