The Giants have signed former Houston Texans linebacker Danny Clark to an undisclosed contract.  The eight-year veteran appeared in 13 games for the Texans last season and had 43 tackles.  He was Jacksonville’s seventh-round pick in the 2000 draft by current Giants head coach Tom Coughlin.  Clark has played for the Jaguars, Raiders, Saints as well as Houston.  He has 576 tackles, five sacks and two picks in 122 NFL games.