[See cvs log for include/rm.h or doc/window.doc for more complete description.]
Attach hero info, death reason, and date+time to a level that's being saved
as bones. Read such data back when loading a bones file, then treat it as
part of that level for the rest of the game. Dying on a loaded bones file
will chain the new hero+death+date to previous one(s) if new bones get saved.
outrip() now takes an extra argument of type time_t, and interface-specific
implementations of this routine need to be updated to handle that.