tests: skip `test-wsgicgi.t` on MSYS...
tests: skip `test-wsgicgi.t` on MSYS
The test is attempting to set `PATH_INFO="/rev/\xe2\x80\x94"` into the
environment, which it does. The problem is that when MSYS sees a leading '/' in
an environment variable, it thinks it's a unix filesystem path, so it "helpfully"
prepends the Windows path to the MSYS root directory before running a non-MSYS
process. hgweb would then split this value on '/', so it would get 'C:' instead
of 'rev', and return a 400 since that isn't a valid web command.
I tried generating a *.bat file, but had trouble running that via `cmd.exe`
inside the test. I also tried generating an equivalent *.py launcher that would
set the environment variables itself. But there is no `os.environb` on Windows,
and the value was getting mangled when put into the script. So, I give up. If
it's encoding stuff on Windows, it's probably broken.
