Casting call: Bridget Gless, niece of series star Sharon Gless, gets a recurring role on CBS-TV's "The Trials of Rosie O'Neill" . . . Richard Dreyfuss and Julie Hagerty join Bill Murray in "What About Bob?" a comedy now filming in Virginia . . . Peter Weller, citing "other commitments," says he won't play Robocop Murphy in "Robocop 3," due to start filming in December . . . Jack Scalia and Kathryn Harrold wrap work on the USA Network TV movie "Deadly Desire" . . . Charles Bronson agrees to star in "Indian Runner," directed by Sean Penn.