Ok, think I've got this all sorted out a bit. Code is much simpler now,

though much of this could be moved into the base class as there's a lot
of copy-paste action going on.


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@768992 283d02a7-25f6-0310-bc7c-ecb5cbfe19da