user32: Add a test for ToUnicode - Win9x behaviour

[Andre Wisplinghoff]

> I ran your tests on win95 and win98 and both have at least the 
> function available but as you've stated it's not implemented.
>
> Current approach for dealing with this is for example:
>
> SetLastError(0xdeadbeef);
> ret = ToUnicode(...);
> if (!ret && GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
> {
>     skip("ToUnicode is not implemented\n");
>     return;
> }
>
> or something along those lines. Notice the handy skip() function we 
> have for skipping tests. This will make sure that skipped tests will 
> be marked as such in the test reports.
>

Thanks for your help! I've resent my patch:
http://www.winehq.org/pipermail/wine-patches/2008-July/058803.html

Best Regards
-- Andre