By Keith Coffman DENVER (Reuters) - A University of Colorado psychiatrist who once treated accused theater gunman James Holmes described him to a campus police officer as having had "homicidal thoughts" five weeks before he allegedly killed 12 moviegoers, newly unsealed court records showed on Thursday. Dr. Lynne Fenton also told the campus police officer that Holmes, then a graduate student of neuroscience, had threatened her in email and text messages, police detectives said in an affidavit filed last year seeking school records for their investigation. ...