winedump doc

[Eric Pouech]

> Sorry, but I don't agree with this patch. Unix docs for command
> line utilities come in the form of man pages (or info pages).
> Why put in .sgml? Who's gonna read it there?
anyone who doesn't now Wine and wants to know about the provided tools
I really don't think looking into the source in tools/winedump/README is
way simpler

having it also as a man file should be done too, but not exclusively