* lily/music-output-def.cc (LY_DEFINE): ly_output_def_scope: new
function.
* scm/paper.scm: new file.
(set-staff-size): new function
(set-paper-size): new function
* lily/parser.yy (music_output_def_body): restructure definition,
so first Scheme statement in \paper also happens in new scope.
* lily/system.cc (post_processing): move uniquify_list () to
dumping molecule stage.
* ly/engraver-init.ly (AncientRemoveEmptyStaffContext): set
barCheckSynchronize to #f. Warning: this will mess up scores that
use barchecks to shorten measures.
* mf/feta-bolletjes.mf (overdone_heads): make note heads rounder
at 20pt too.