r2.12 released 2014-12-14

+ fixed quoting issue with localized names
+ fixed CMakeLists for multithreaded builds
+ fixed overriding files with Hidden and/or NoDisplay keys
+ whitespace after = is now ignored
+ implemented desktop file ID concept of the XDG specification
  (supersedes old override-by-name semantics)
+ added support for OnlyShowIn and NotShowIn tags
+ added --use-xdg-de flag to interpret KDE
  (for OnlyShowIn/NotShowIn)
+ temporary files are now created with mkstemp