[openib-general] compilation platform dependencies

[Sean Hefty]

Roland Dreier wrote:
> All structs more than 4 bytes in size have to be padded to a multiple
> of 8 bytes, or else they end up with a different size between 32-bit
> and 64-bit architectures.  I think something like the patch below
> along with the corresponding userspace libibcm change is required.

Thanks - I committed this with a minor change to use __u8 reserved[4] in a 
couple places where __u32 were used.

- Sean