[mb-style] [Clean up CSG] Box sets, aka, what defines a unique release?

[Leiv Hellebo]

Brian Schweitzer wrote:
> Box Sets, aka: what defines a unique classical release?
> 
> This one is a pain, but not just in classical.

I don't agree, I find BoxSetNameStyle sensible and good.


(This is not to say that there aren't problematic cases. Here is an 
AddReleaseEdit for the second disc of a two-disc compilation that to my 
knowledge has not been released separately, yet it is part of (at least) 
two box sets:

http://musicbrainz.org/mod/search/results.html?object_type=album&orderby=desc&object_id=667055

I have forgotten to add proper annotations for the two discs on this and 
will do it later.)