Allow multiple devices to be specified on one device / nodevice line. Also allow "device" / "nodevice" to be spelled "devices" / "nodevices".
Allow multiple devices to be specified on one device / nodevice line.
Also allow "device" / "nodevice" to be spelled "devices" / "nodevices".

MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase