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There is no file getPermissions001 on Windows, so comment out this test.
There's no other obvious source of executable files which are named the same
on Windows and Unix either. If you really want to, you could always set the
permissions (if that's possible from Haskell) and then test them, but for
now content ourselves with non-executable files and directories.

PLEASE MERGE WITH STABLE BRANCH. (Also my last commit to the test suite,
which I forgot to label.)