I am trying to add `--verify-excludes` to all jtreg runs. This new flag will let jtreg catch (at least some) mistakes in problem lists. There are some technical hurdles remaining to add this option, but in the meantime I thought I could at least fix those issues I have found so far. This is not exhaustive, I am sure there are more issues that will be discovered, but these are at least real errors that can be fixed.