Re: Issue 989 in lilypond: ensure that no information about 2.12.3 features is only in the regtests

[lilypond]

Updates:
	Summary: ensure that no information about 2.12.3 features is only in the  
regtests

Comment #18 on issue 989 by percival.music.ca: ensure that no information  
about 2.12.3 features is only in the regtests
http://code.google.com/p/lilypond/issues/detail?id=989

As Han-Wen pointed out, we shouldn't be holding back a release for any  
undocumented 2.13-only features.  I've therefore made a separate issue 1217  
for taking care of that.

This issue is now about features present in 2.12.3 only -- we will not have  
a stable release until any relevant information in the 2.12.3 regtests is  
in the documentation.


(I know that some people might feel strongly that "undocumented new  
features" is a reason to delay a release... frankly, I feel the same way,  
and after 2.14.0 is out, I'm going to propose that this become an official  
release-blocking condition.  However, it doesn't match our traditional  
release-blocking condition, and I don't feel justified in changing the  
rules at this stage in the release.)