2006-09-22 Erik Sandberg <mandolaerik@gmail.com>

2006-09-22  Erik Sandberg  <mandolaerik@gmail.com>

	* lily/lexer.ll: remove limitation on music function arity. New
	mode extratoken, which inserts extra EXPECT_* tokens after
	MUSIC_FUNCTION token. Junk all MUSIC_FUNCTION_* tokens.

	* lily/parser.yy: Change grammar for music function accordingly.

	* lily/include/lily-parser.hh: New method get_state, new member
	hidden_state. Works around a problem when parser fetches
	MUSIC_FUNCTION token but not the following EXPECT_* token.