[rfc] gcc trunk - libgomp thread affinity for freebsd

[Adrian Chadd]

Hi,

This patch implements basic top level thread affinity support for
freebsd. It doesn't yet implement thread affinity support for
core/socket grouping yet; I'm working on a library to extract that out
to userland and plan on teaching libgomp about it at a later stage.

https://people.freebsd.org/~adrian/gcc/20150506-gcc-trunk-libgomp-1.diff

I'd appreciate feedback/review.

Thanks!


-adrian