branch boyceg: working on adv-diff ex1
branch boyceg: working on adv-diff ex1

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