branch boyceg: updated explicit IB solver not to emit an error if the time step size changes at the last time step
branch boyceg: updated explicit IB solver not to emit an error if the time step size changes at the last time step

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