Added support for mount namespaces in bind.py. Also moved it to the node class as a host type.
Merge branch 'patches/fix_bindpy' of https://github.com/cdburkard/mininet into patches/fix_bindpy
added code to kill stale mininet processes
added support in iperf for different result formats. also added upper bounds for hifi tests
added persistence option to HostWithPrivateDirs. also attached mount namespaces when mnexec -a is specified
imported check_output
mountprivatedirs is no longer needed
added documentation for HostWithPrivateDirs
Merge pull request #317 from cdburkard/patches/cleanup

added code to kill stale mininet processes
use a single mininet instance in bindpy
set staticArp in testLinkDelay
conforming to mininet style
fixed default iperf formatting behavior
Merge pull request #315 from cdburkard/patches/fix_bindpy

Added support for mount namespaces in bind.py
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
Merge branch 'patches/cleanup'
Adding listen socket to UserSwitch when there is no listenPort set
Merge remote-tracking branch 'upstream/master'