[python-webassets/f19] (4 commits) ...backport some patches to 0.9

[Dan Callaghan]

Summary of changes:

  9668015... Rebuilt for https://fedoraproject.org/wiki/Changes/Python_3 (*)
  0899b8a... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass (*)
  8ae7228... no Python 3 in EPEL7 (yet) (*)
  a21fb9d... backport some patches to 0.9 (*)

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