[Unison-hackers] Unison 2.40.1 -- beta release candidate

[Alan Schmitt]

> The types uint64 and int64 are not used anywhere in our code.  Thus,
> this is just a way to avoid name conflicts between the Mac OS X and
> OCaml header files.
>
> Can you test this change and commit it?  You should add a comment that
> indicates that this is a workaround for an incompatibility between
> Ocaml 3.11.2 (and older) and the Mac OS X header files.

I tested it on 10.6 intel 64bits and 10.5 PPC, and it worked, so I'll
commit it.

What's missing is a way to tell xcode to compile a 10.6 64 bits binary
when needed (I had to manually change this in Xcode).

Alan