This reverts commit 07aad110.

When the semantics are clear, functionality like this will get added back to
Mininet.

Conflicts:

	mininet/node.py

Controllers are no longer namespace-able, and all calls need one fewer
arg.

Also use more sensible temporary variable name.

Works around bug in newer version of kernel-package.

Thanks to Ben Pfaff who wrote the patch

Now, the majority the install can be done with one line, but the other
to each part of the install is still available.

Also fix a few bugs and add Wireshark coloring rules.

We should check NOXController and RemoteController to make sure that
they are not broken, but I cannot do this at the moment.

Also rearranged parameters in link command to

mininet> link s1 h2 up

To resemble ifconfig a bit more.

It should also probably be renamed to something like:
configLinks(src, dst, status).

Moved monitor() and readline() into net.py and node.py respectively,
which will hopefully be useful for monitoring large sets of hosts,
as is done in udpbwtest.py.

Changed iperf to use interactive command infrastructure (such as it
is), which may make it more reliable. Hopefully it's a bit clearer
as well, although it is slightly more complicated.