[ccache/el6/master] (7 commits) ...Merge branch 'master' into el6

[Ville Skyttä]

Summary of changes:

  2199682... Update compiler executable lists, make their package trigge (*)
  c8a1935... Auto-symlink mingw32-gcc(-c++) compilers. (*)
  b59e548... - Update to 3.1.4. (*)
  d524202... - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass (*)
  7ad63b9... Reset non-working cache dir related env settings on user sw (*)
  7f8288e... Replace Requires(trigger*) with plain requires to appease r (*)
  9bfd19d... Merge branch 'master' into el6

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