branch boyceg: fixing initialization of U
branch boyceg: fixing initialization of U

huahbo/IBAMR,iamciera/IBAMR,iamciera/IBAMR,yaojieuh/IBAMR,yaojieuh/IBAMR,huahbo/IBAMR,huahbo/IBAMR,yaojieuh/IBAMR,yaojieuh/IBAMR,huahbo/IBAMR,huahbo/IBAMR,iamciera/IBAMR,huahbo/IBAMR,iamciera/IBAMR,iamciera/IBAMR,iamciera/IBAMR,huahbo/IBAMR,yaojieuh/IBAMR,iamciera/IBAMR,yaojieuh/IBAMR,yaojieuh/IBAMR