added support in iperf for different result formats. also added upper bounds for hifi tests
set staticArp in testLinkDelay
fixed default iperf formatting behavior
rolled back to iperf format option, and changed 'cpu' variable to 'pct'
Revert "fixed default iperf formatting behavior"

This reverts commit 0e733c77543b16a67d77465b416fdd77cb509807.
set default iperf formatting to none
added waitConnected attribute to mininet class
improved waitConnected algorithm and set default wait time to wait forever
added documentation for waitConnected timeout
conforming to style, and fixing documentation
added waitConnect to linearbandwidth example.
fixed waitConnected performance and moved waitConnected call to mn.start
fixed linearbandwidth and waitconnected
Add build() method to simplify Topo() usage
Add nodelib.py, a library of new node types
Add alias + switch: { 'ovs': OVSSwitch, 'lxbr': LinuxBridge }
fixed last commit
Shutting down controller first
Merge pull request #328 from mininet/devel/newtopo

Add build() method to simplify Topo() usage
Merge pull request #326 from cdburkard/patches/nets

Switched shutdown order to kill controller first