Silme:0.8

• port (move) locale tests from compare-locales to Silme (e.g. finding duplicates, testing accesskeys, spell checking)
• port (move) diff format parsers from compare-locales to Silme (full tree, short-path tree, full-relative-path list, JSON-tree)
• move tests to lib/testing and leave just a few scripts in scripts/ for running the tests