[black_eagle]

I didn't change any of the tag reading, so I presume that it can already handle different separators.  I just added a check to look for 'boxset' in the value(s) returned from that tag inside CTagLoaderTagLib::SetReleaseType by which time all the parsing etc has already been done.  It checks against a single value and against multiple values that have been joined using m_musicItemSeparator.  If it finds it, it then checks to see if the disc subtitle is empty and if so, generates a dummy title which is then processed later.  If the disc title is not empty then we keep it.  In either case, we set the boxset flag with tag.SetBoxset(true) as the presence of 'boxset' in the tag indicates the user wants this album to be processed as a set.  If the tag doesn't have that value it is processed as before.