NEW ORLEANS — A strict Texas voter ID law with a complicated legal history has been remedied with a provision that allows people who lack a required photo ID to vote if they sign an affidavit stating there was a reasonable impediment to them getting one, the state’s solicitor general told a federal appeals court panel Tuesday in New Orleans.The change renders moot any arguments against the law, passed in 2011 and reworked by the Texas Legislature in May after years of litigation, Scott Keller told a three-judge …