Re: Several fixes for annotate-spacing. (issue 4950071)

[joeneeman]

Reviewers: J_lowe, Neil Puttock,

Message:
Thanks, all fixed.

Description:
Several fixes for annotate-spacing.

- Fixes annotate-spacing to use the new spacing names.
- Annotates spacing between staves as well as spacing between systems.
- Fixes some collisions between annotations.
- Padding (between systems, titles and staves) is properly annotated,
  with the annotation occuring at the horizontal position where the
  collision would actually happen. If the padding is the cause of the
  vertical spacing, it is highlighted in green.

Please review this at http://codereview.appspot.com/4950071/

Affected files:
  M lily/include/skyline-pair.hh
  M lily/include/skyline.hh
  M lily/include/system.hh
  A lily/page-layout-problem-scheme.cc
  M lily/skyline-pair.cc
  M lily/skyline.cc
  M lily/system.cc
  scm/paper-system.scm
  scm/stencil.scm