[Bug 47959] WINE fails to configure on CYGWIN

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47959

--- Comment #4 from Carlo Bramini  ---
The configuration now completes, but it seems wrong because it still fails to
detect files like "krb5/krb5.h". If I can say my opinion, I still think that
removing _WIN32 would be a better solution and it should be replaced with
another macro, for example WINE_ON_WINDOWS but you can call it as you want, to
be used in other parts of the code. This is needed because the compilation will
also fail when you run "make", but this will be a different bug.
Thank you very much for your time.

Sincerely.