Re: [Lilypond-auto] Issue 2533 in lilypond: Patch: line_count fixes

[lilypond]

Comment #68 on issue 2533 by address@hidden: Patch: line_count fixes
http://code.google.com/p/lilypond/issues/detail?id=2533

about comment #56: yes, regtests were reorganized to avoid the assertion;  
however, the assert was triggered by old code on a new regtest.

I am more than happy to submit four individual commits for review:
1. new regtests
2. slur changes: old code handled slurs below staff as if within (an  
infinite) staff, while slurs above staff as running in void (even for a  
standard staff); now slurs below staff behave like those above
3. time signature positioning changes (I hope the new regtests show that,  
at least for asymmetric but standard-spaced staves the new behaviour is  
better)
4. minor changes (not influencing regtests)