kernel32: Implement ReplaceFileW

[luis.busquets at ilidium.com]

I have read this patch sent in several times and have realised that every
time it contains a large number of "goto"'s.

I certainly do not like "goto" in structured code.
My question to the forum is if it is allowed to use "goto" in wine or if
you prefer not to use it.

Even when this will make the code larger but it may give a little nore
readability,