[nordugrid-arc/f20] (6 commits) ...4.2.0 Final Release

[Mattias Ellert]

Summary of changes:

  4370570... Rebuilt for https://fedoraproject.org/wiki/Changes/Python_3 (*)
  fcb66c7... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass (*)
  856aeb3... Rebuilt for xrootd 4 (*)
  4b3d66e... Backport support for newer python-twisted (*)
  919c454... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_M (*)
  922f53e... 4.2.0 Final Release (*)

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