[Cin] new cygwin patch for testing

[Andrew Randrianasulu]

For some reason cinelerra/TESTS was both file (as seen in patch) and
directory (git rm complained about impossibility to remove it)?

Unfortunately, it still does not work at my end with plugins all returning
bad exec format . :(

For some reason new cygwin does not have desktop link to Openbox startup,
but running startxwin from cygwin console started X server properly ...
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