/* $DOC$
   $NAME$
      ft_RestSets()
   $CATEGORY$
      Environment
   $ONELINER$
      Restore status of all SET command settings
   $SYNTAX$
      ft_RestSets( [ <aOldSets> ] ) -> NIL
   $ARGUMENTS$
      aOldSets is an array of SET settings created by ft_SaveSets()
   $RETURNS$
      NIL
   $DESCRIPTION$
      This function "restores" the SET Settings, i.e., it sets them to the
      values in the array aOldSets.  The following SETs are not currently
      supported: FILTER, FORMAT, FUNCTION, INDEX, KEYS, MODE, ORDER,
      PROCEDURE, RELATION, TYPEAHEAD
   $EXAMPLES$
      ft_RestSets( aOldSets )
   $SEEALSO$
      ft_SaveSets(), ft_SetCentury()
   $END$
 */