Merge branch 'master' into nat

INSTALL

LICENSE

Makefile

README.md

bin/mn

examples/README.md

examples/bind.py

examples/controllers2.py

examples/linearbandwidth.py

examples/miniedit.py

examples/nat.py

examples/numberedports.py

examples/sshd.py

examples/test/test_hwintf.py

examples/test/test_numberedports.py

examples/test/test_simpleperf.py

examples/test/test_sshd.py

mininet/clean.py

mininet/cli.py

mininet/log.py