Added utility script to run the hncp-net test scripts with different fixed seeds.
Made iterations configurable, and BIG by default. Also added correct random seed option, and option to specify particular tests to test only.(Some tests fail at random seeds >100, sigh).
Added correct return values to mocked hncp_io_sendto.
Some cleanup + some more debugs to Trickle code, and found buglet if network state sending fails (it would spam call send, which is probably not good idea if it failed originally due to out of resources or something).
New and improved monkey random thing, now with better debug messages.