OFFICE SECRETARY ANNOUNCES CALLS FROM SMATHERS, WALTER REUTHER; LBJ ASKS HER TO HAVE REUTHER HOLD; LBJ ASKS ABOUT CHANCES OF GETTING DON FUQUA'S VOTE ON POVERTY BILL; SMATHERS ADVISES LBJ TO CALL ROBERT SIKES, ASK FOR SIKES' HELP IN GETTING FUQUA'S VOTE