MCGEORGE BUNDY'S MEMO ON APPOINTMENT OF WH SPECIAL ASSISTANT ON VIETNAM; ROBERT KINTNER; JOHN MCNAUGHTON; ROBERT KOMER; PRESS LEAKS FROM SAIGON TO JOSEPH ALSOP, WARD JUST, NEIL SHEEHAN; RFK'S STATEMENT ABOUT VIET CONG YESTERDAY; RESPONSE OF MOYERS, HHH