A forensic document examiner did not libel certain members of his profession in a law journal article discussing how to tell the difference between “true professionals” and “unqualified” or “lesser qualified practitioners,” a federal judge held Thursday.In a written opinion, U.S. District Judge Edmond E. Chang threw out a lawsuit the Board of Forensic Document Examiners Inc. and seven of its members brought against author Thomas Vastrick and other defendants.Chang conceded Vastrick is a …