[HECnet] PyDECnet T1.1

I've put the beta PyDECnet T1.1 up on area router PYTHON. That will make a more interesting test than the previous one (which was to have it running on 28NH, the HECnet mapper). It seems to be working ok, but if anyone sees strange behavior that might be connected to this node, please let me know. The code should be faster, significantly so in a few spots. I suspect that won't be all that noticeable in practice. It should also have some bugs fixed. Among them are some NICE protocol issues: there were problems with reporting adjacent node information some of the time, those should be gone in this code. paul