pingall now reports fraction received

fixes #168

fixes #166

fixes #180

fixes #172

fixes #173

D'oh!  Next time test presence _and_ absense of an added env var.

OTOH, when people notice this quickly, it means they're using install.sh :-)

fixes #176

Dynamic Network with Remote Controller example; Extended LinearTopo

Simplified and refactored examples/dynamicnet.py

Developer dependencies are ~1GB

Cleanup and cosmetic changes.

Fix issue with mountCgroups not recognizing mounted cgroup

Extended LinearTopo to support mulitple hosts per switch

Extensibility Improvements

The script builds a network topology based on command line
arguments and uses a remote controller

Right now after installing mininet using util/install.sh there is a problem when try to generate doc:
	make doc
	doxygen doc/doxygen.cfg
	make: doxygen: Command not found
	make: *** [doc] Error 127
Adding doxygen, doxypy and texlive-fonts-recommended packages to fix the problem.

s/http:\/\/openflow.org\/mininet/http:\/\/mininet.org/g

Changed mountCgroups to use the file /proc/mounts (instead of the
current case where it uses the less reliable
(http://www.mail-archive.com/lxc-devel@lists.sourceforge.net/msg00455.html)
/etc/mtab thorugh the mount program

fixes #143

Fixes #94

fixes #161

It appears that under certain conditions, such as when a
namespace exits, both ends of a veth pair may get dumped
into the root namespace. We therefore now remove an interface
both from its home namespace and from the root namespace.