[Azoth MuC] Stub Spirit-based presence command parser.
[Azoth MuC] Stub tests.
[Azoth MuC] Depend the tests target on the library.

This way we won't get the same Boost.Spirit-related errors twice.
[Azoth MuC] Removed old stuff.
[Azoth MuC] Better parser.
[Azoth MuC] QTest::toString() for Boost and STL types.
[Azoth MuC] More tests, better tests.