* lily/source-file.cc (get_line): oops. All line numbers were off

* lily/source-file.cc (get_line): oops. All line numbers were off
by 2. Fix that.

* lily/parser.yy (event_that_take_dir): allow () \< \> \! \( \) to
be after the note, combined with -_^, i.e. c4-(-\)-\>

* ly/params-init.ly (ledgerlinethickness): use Scheme expressions.

* lily/parser.yy (number_factor): remove (number) as number
expression. ("Let them eat Lisp").