A South Carolina prison inmate handed a judge a "wad" of counterfeit cash to pay his trespassing bond — and then told the judge to "keep the change," the Chesterfield County Sheriff's Office said.Officials on Monday said an inmate at the Chesterfield County Detention Center was charged with forgery after the incident.With that, instead of a relatively minor charge of trespassing, Alexander soon was charged with counterfeit money/forgery, the she…