darcs patch: Display a more helpful error message, wh... (and 2 more)

Tue Jul 31 00:40:26 CEST 2007 Thomas Schilling * Display a more helpful error message, when unknown fields are noticed. Tue Jul 31 00:52:56 CEST 2007 Thomas Schilling * Add line numbers to unknown fields error message. Tue Jul 31 00:53:11 CEST 2007 Thomas Schilling * Fix order of warnings.