[coreutils] testsuite worthless on cygwin

[Eric Blake]

Unfortunately, 'make check' is failing almost all of the tests on
cygwin.  Why?  Because init.sh uses find_exe_basenames_ to see whether
all .exe files are safe to install a shim function around, but [.exe
fails the test.  Meanwhile, create_exe_shims_ returns 1 rather than 0
(or 77) when skipping a directory, which makes path_prepend_ fail almost
every single test with the message 'something failed (above):
/path/to/coreutils/src)'.

I'm thinking that init.sh should skip problematic files (we're less
likely to be testing [ directly to have to worry about conflicts with
[.exe) rather than giving up on the entire directory.  Any other
opinions, or should I go ahead and propose a patch?

-- 
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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