disabling wow64, testing 64-bit wine-mono P/invoke

[Vincent Povirk]

> Is there any way of doing this with 64-bit wine and 64-bit wine-mono?

Currently, Wine does not have the ability to load pure .NET PE images
in a 64-bit process.

Ntdll needs to call _CorValidateImage during the loading process.
_CorValidateImage needs to convert the image, in memory, to the
correct architecture.

It's complicated, and I don't have a solution.