* ly/params-init.ly (blotdiameter): set blotdiameter to 2/3 of

* ly/params-init.ly (blotdiameter): set blotdiameter to 2/3 of
stafflinethickness (in the default)

* lily/stem.cc (brew_molecule): use round_filled_box for stem.

* lily/lily-guile.cc (parse_symbol_list): strip spaces at the end.

* lily/stem.cc: remove #'up-to-staff ; use #'stem-end-position for
forcing up to staff.  remove #'support-head property
(brew_molecule): small cleanup.
(flag): remove #'grace property.