style in multitest
Commented out kernel ref, moved to Open vSwitch.
Removed unnecessary init() calls.
Reinstated multitest example and updated examples/README.
Remove/merge obsolete examples
Use setuptools to install python files
Now, to reference mininet files, use 'import mininet.mininet'.
PYTHONPATH mods are no longer required for installation.
Cleanup of doc files.Fixed xterm.py (and cleanup) to clean up screen sessions.Cleaned up sshd.py (though interface is still in flux.)Added 1024-node network example (treenet1024.py).Added example showing multiple tests on a single network (multitest.py)....