It is wise to pump the brakes on the anticipation that Dominique Rodgers-Cromartie is switching positions, from cornerback to free safety. That decision has not been made by the Giants and certainly not been mentioned to Rodgers-Cromartie, someone with knowledge of the situation told The Post. Reports surfaced last week that Rodgers-Cromartie, the 31-year-old cornerback, was going to return for the fifth and final year of his contract at a new position. That was news to the Giants coaches and front office personnel who would know about such a move, if it was true or had already been decided.