some test fixes

remaining failures:

    # starting 3 tests in pos
    !! 1 - pos/virtnew_selfref.scala                 [compilation failed]
    !! 2 - pos/virt_sourcecontext.scala              [compilation failed]
    !! 3 - pos/virtnew_tops_newvar.scala             [compilation failed]
    # 0/3 passed, 3 failed in pos

    # starting 1 test in neg
    !! 1 - neg/names-defaults-neg.scala              [output differs]
    # 0/1 passed, 1 failed in neg

    # starting 7 tests in run
    !! 1 - run/applydynamic_row.scala                [compilation failed]
    !! 2 - run/virtpatmat_stagingreified.scala       [compilation failed]
    !! 3 - run/virtnew_optiql.scala                  [compilation failed]
    !! 4 - run/virtpatmat_rulelang.scala             [compilation failed]
    !! 5 - run/virtpatmat_problang.scala             [compilation failed]
    !! 6 - run/virtpatmat_problang3.scala            [compilation failed]
    !! 7 - run/t6240-universe-code-gen.scala         [non-zero exit code]
    # 0/7 passed, 7 failed in run

    # starting 1 test in scalacheck
    !! 1 - scalacheck/quasiquotes                    [ScalaCheck test failed]
    # 0/1 passed, 1 failed in scalacheck