[Bug 39811] GetLongPathName not working on case insensitive filesystems when short path is passed

https://bugs.winehq.org/show_bug.cgi?id=39811

--- Comment #2 from Matteo Bruni  ---
(In reply to Piotr Caban from comment #1)
> Probably a correct solution is to revert Ken's patch and remove
> "else if (!case_sensitive && ret && (errno == ENOENT || errno == ENOTDIR))"
> block from Matteo's patch but I'll leave it to patch authors.

That seems like a sensible solution. I would also add some tests to both
NtQueryDirectoryFiles and GetLongPathName.

Actually if I'm not mistaken there is already a test for GetLongPathName which
would regress with these patches...