object_name - called by the driver to find out an object's name

string object_name( object );

This master apply is called by the sprintf() efun, when
printing the "value" of an object.  This function should
return a string corresponding to the name of the object
(eg a user's name).

See also:
 file_name

 Tim Hollebeek  Beek@ZorkMUD, Lima Bean, IdeaExchange, and elsewhere
