[python-matplotlib/f19] (3 commits) ...agg rebuild.

[tomspur]

Summary of changes:

  c4143b6... use python3 version in python3-matplotlib-qt4 (#915727) (*)
  90bbb1e... include __pycache__ files in correct subpackages on python3 (*)
  e5fc5ec... agg rebuild. (*)

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