Various simple test scripts to verify some parts of the NUMA API.

You should have at least two nodes for the test suite. For x86-64

there is a patch in numa-emu-2 that allows to simulate multiple nodes

on a non NUMA machine.

The tests in regress assume that there is enough memory free on nodes 0/1.

They consider PREFERRED/INTERLEAVE not hitting the first choice node an

error.

TBD: more detailed unit tests for mbind / shm / {get,set}_mempolicy

Currently everything is tested using numactl only.