message: Skip test on clang <8 instead of 7
diff: @@ -15,7 +15,7 @@ class TestTailCallFrameSBAPI(TestBase):
  # each debug info format.
  NO_DEBUG_INFO_TESTCASE = True
  - @skipIf(compiler="clang", compiler_version=['<', '7.0'])
  + @skipIf(compiler="clang", compiler_version=['<', '8.0'])
  @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr26265")
  def test_tail_call_frame_sbapi(self):
  self.build()
  