AD2USB Interface debug mode

[Tom Yarmas]

Just noticed that the debug mode for my alarm interface was on, but the debug checkbox was not checked in the interfaces status window. It seems that the logic is backwards for the checkbox on just that interface (ad2usb). If I check the debug option it turns off debug mode. For all other interfaces, when I check the checkbox it turns on debug mode. 

I think it must have always been this way. I thought the AD2USB interface was awful chatty, and did not realize debug mode has been on the whole time.

v9.3.1 (build 963)

-tom