* lily/paper-system.cc (read_left_bound): new function. Read

* lily/paper-system.cc (read_left_bound): new function. Read
line-break-system-details from left bound to determine extents.

* Documentation/user/programming-interface.itely (Using LilyPond
syntax inside Scheme): change applyxxx -> applyXxx.

* ly/music-functions-init.ly: add outputProperty music function.

* lily/parser.yy (Generic_prefix_music_scm): add scm-scm-scm signature.

* lily/grob-scheme.cc (LY_DEFINE): add ! to ly:grob-suicide! name.

* python/convertrules.py (conv): rule

* ly/music-functions-init.ly: applyxxx -> applyXxx

* ly/engraver-init.ly (AncientRemoveEmptyStaffContext): alias
TabVoice to Voice.