function is buggy since the first version of windows that supports something
else than FAT, and instead of fixing the problem, Microsoft has declared it
"works as designed". The problem has made it into .NET and is also visible in
the standard windows file explorer (modification times of untouched files will
change when entering or leaving DST).
Please note that the new FileStat function returns incorrect times for files
on FAT file systems. This is because I have currently no idea on how to
identify the file system for a given file. However, it should be correct in
quite some more cases than stat().
git-svn-id: svn://svn.cc65.org/cc65/trunk@5632 b7a2c559-68d2-44c3-8de9-860c34a00d81
