DeleteAll()
USAGE
void DeleteAll()
FUNCTION
This deallocates everything that was allocated with DupeKnobList, DupeMenu,
DupeListInfo, and DupeNewWindow.
This should only be called when your program closes, to catch any structures
that were allocated with the Dupe routines but not deleted, and return them
to the system free list.
INPUTS
none
RESULT
none