dehacked: Add level names.
dehacked: Add level names.

These are some initial level names based on discussion on the Doomworld
Freedoom forum thread found here:
http://www.doomworld.com/vb/freedoom/66592-lets-name-freedooms-levels/

CWolfRU/freedoom,jmtd/freedoom,CWolfRU/freedoom,jmtd/freedoom,jmtd/freedoom