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 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
Whitespace changes in OVSSwitch.
Merge pull request #317 from cdburkard/patches/cleanup

added code to kill stale mininet processes
use a single mininet instance in bindpy
conforming to mininet style
Merge pull request #315 from cdburkard/patches/fix_bindpy

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