Merge branch 'master' into ke-lua

Merge branch 'master' into ke-lua

* master: (185 commits)
  better fix for big-endian architectures
  Minor indentation fixes.
  Cleanup checker shader code.
  Fix exif orientation in clutter rendering mode.
  Silent 2 warnings using explicit type casting.
  Polish translation was updated, thanks to Grzegorz Gibas.
  Update pt_BR translation.
  Add *~, *.rej, *.orig files to git ignore list.
  Fix for support >=automake-1.11.4
  Trim trailing white spaces on empty lines.
  Trim trailing white spaces.
  Add missing vim modeline.
  Fix indentation and few trailing white spaces.
  Clear few more warnings, unused variables mostly.
  Drop unused variable.
  Remove commented out code.
  Remove commented out code.
  Remove commented out code.
  Remove commented out code.
  Remove commented out code.
  ...