checked in: Build with -DMS_WIN64 on amd64-windows if Python enabled...

[Joel Brobecker]

> gdb/ChangeLog:
> 
>         * configure.ac: Build with -DMS_WIN64 if building with Python
>         enabled using GCC on amd64-windows.
>         * configure: Regenerate.

FTR, I've just checked this patch in.

-- 
Joel