* scm/define-grobs.scm (all-grob-descriptions): put ledger lines

* scm/define-grobs.scm (all-grob-descriptions): put ledger lines
in layer 0 too.

* scm/define-context-properties.scm
(all-user-translation-properties): add tieWaitForNote

* scm/define-grobs.scm (all-grob-descriptions): add
Tie_column::before_line_breaking

* lily/tie.cc (get_column_rank): new function

* lily/tie-column.cc (before_line_breaking): new function.
(werner_directions): take into account ties that start on
different columns.

* lily/score-engraver.cc (set_columns): move add_column() so we
have column rank available.

* lily/tie.cc (get_column_rank): new function.