CHG: added vi.vna.PNAX.__init__ parameter to control front-panel 	lockout
CHG: added vi.vna.PNAX.__init__ parameter to control front-panel
	lockout

hohe/scikit-rf,hohe/scikit-rf,Ttl/scikit-rf,Ttl/scikit-rf,Ttl/scikit-rf,Ttl/scikit-rf,aerialist/scikit-rf,willhaines/scikit-rf,jhillairet/scikit-rf,jhillairet/scikit-rf,scikit-rf/scikit-rf,gibbons/scikit-rf,aerialist/scikit-rf,temmeand/scikit-rf,aerialist/scikit-rf,jhillairet/scikit-rf,scikit-rf/scikit-rf,willhaines/scikit-rf,gibbons/scikit-rf,gibbons/scikit-rf,temmeand/scikit-rf,willhaines/scikit-rf,hohe/scikit-rf,willhaines/scikit-rf,temmeand/scikit-rf,hohe/scikit-rf