Rewrote and stop taglib from re-encoding as UTF-16.

Rewrote and stop taglib from re-encoding as UTF-16.

The rewrite wasn't actually necessary, but I ended up doing so while trying to
figure out what was happening to the text frames.

Finally figured out that taglib rudely writes out UTF-16 even though it read in
latin1 and I didn't tell it to change anything.  You have to tell it for each
frame which encoding to use.