[allegro/f20] (3 commits) ...Replace racy recursive mutex implementation with proper recursive mutexes

[Hans de Goede]

Summary of changes:

  745ede4... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass (*)
  9e123a4... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_M (*)
  61dc808... Replace racy recursive mutex implementation with proper rec (*)

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