Edit thread title via script

[kh99]

I tested this using just the datamanager code (I took out the post index stuff) and it seem to work. But if you're looking at the forum view (the "last thread" title) it doesn't change because you need to rebuild the forum info (or maybe that's done by the post index stuff I removed?). Anyway, maybe check the database directly if you can and check to see if the title is changing.