* mf/parmesan-clefs.mf: use # quantities for char_box

* mf/parmesan-clefs.mf: use # quantities for char_box
offsets. Fixes overflow errors in the PFA.

* scm/new-markup.scm (strut-markup): change calling interface for
markup. Pass paper-def, not grob. This would \markup to be used
separately from grobs.

* lily/paper-def.cc: new function ly:paper-font; this function
replaces ly:get-font.

* lily/include/font-interface.hh (struct Font_interface): take
Paper_def iso. Grob for get_font().