[python-coverage/f18] (3 commits) ...Merge branch 'master' into f18

[Toshio くらとみ]

Summary of changes:

  3e6d7d3... 3.5.3 (*)
  2f23657... Patch from upstream for traceback when people use this with (*)
  43ac0cd... Merge branch 'master' into f18

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