* lily/figured-bass-engraver.cc (process_music): change calling

* lily/figured-bass-engraver.cc (process_music): change calling
convention.

* scm/bass-figure.scm (format-bass-figure): rewrite function.

* scm/define-markup-commands.scm (bracketed-y-column): new markup
command.

* lily/include/stencil.hh (class Stencil): add origin field.

* lily/stencil-scheme.cc (LY_DEFINE): ly:stencil-move-to-edge: new
function.

* lily/grob-scheme.cc (LY_DEFINE): ly:grob-alist-chain: new function.

* lily/lexer.ll: remove support for \$ and $ in identifiers

* lily/sequential-iterator.cc: remove copy_grace_fixups
(get_grace_fixup): slight abstraction of fixup code.

* input/test/title-markup.ly (spaceTest): vary staff sizes.