Prepare glyph shapes for mf2pt1 conversion.

Prepare glyph shapes for mf2pt1 conversion.

* mf/feta-toevallig.mf ("Double Sharp"): Minor path fix.

* mf/feta-bolletjes.mf (penposx): New auxiliary macro.
(define_triangle_shape): Use it replace `draw' with `fill' and
`unfill'.  Update all callers.
(draw_slash): Replace `filldraw' with `fill'.  Update all callers.
(draw_cross): Ditto.
("X-Circled notehead"): Replace `draw' with `fill' and `unfill'.
Use penrazor for better conversion with mf2pt1.
(generic_draw_solfa_note_shape, draw_solfa_note_shape,
draw_solfa_quarter_note_shape, triangle): Removed.  Unused.
(draw_do_head, draw_re_head, draw_mi_head, draw_fa_head,
draw_la_head, draw_ti_head): Replace `filldraw' with
`fill'.  Update all callers.