Merge pull request #463 from kanoi/master

usbutils config & device_drv noops
Merge pull request #464 from kanoi/master

usbutils changes
Adjust socket wait timeout in recv_line according to how long we've already waited to avoid a 60 second wait dropping to 1 second due to a blocked socket.
Fix extra argument passed to statline before.
Check for negative wait time in socket_full.