* lily/mensural-ligature.cc: renamed stem->cauda/join to avoid
semantical collision with vaticana ligatures
* lily/vaticana-ligature-engraver.cc, lily/vaticana-ligature.cc,
scm/define-grob-properties.scm: bugfix: semantics of delta_pitch
now consistent with mensural ligatures
* lily/vaticana-ligature-engraver.cc, lily/vaticana-ligature.cc,
mf/parmesan-heads.mf: bugfix: length of cauda of flexa depends on
context pitches and staff position; dto. for virga stem; removed
obsolete virga and clivis characters from parmesan font (WARNING:
font changed)
* mf/parmesan-heads.mf, mf/parmesan-clefs.mf,
mf/parmesan-timesig.mf: fixed several set_char_box ()'s
* mf/parmesan-heads.mf: bugfix: cephalicus head: corrected
appendix length; bugfix: yoffs_bt for reverse direction punctum
characters
* lily/vaticana-ligature-engraver.cc, lily/vaticana-ligature.cc:
small cleanups; added more docu
* lily/mensural-ligature-engraver.cc, lily/vaticana-ligature-engraver.cc,
lily/coherent-ligature-engraver.cc: cleanup: moved delta-pitch
computation to CoherentLigatureEngraver
* ly/gregorian-init.ly, lily/gregorian-ligature.cc,
scm/define-grob-properties.scm: bugfix: added missing linea and
cavum properties; bugfix: removed dead semivocalis property
* mf/parmesan-heads.mf: bugfix: linea punctum: vertical lines
length; redesigned quilisma, stropha and auctum
* ly/engraver-init.ly, scm/define-grobs.scm: use 0.6 as default
line thickness
* lily/vaticana-ligature-engraver.cc, mf/parmesan-heads.mf,
Documentation/user/refman.itely: bugfix: introduced shifted
epiphonus head to avoid collision with adjacent plica