Added the two Microwave Cavity computers (ph-st1809 and ph-lab10a) to
DAQ/Environs.cs
Added generic GPIB methods to the DAQ/GPIBInstruments.cs class. These are
to read a specified number of characters from a GPIB instrument and set
the timeout to either a specified time or infinite, necessary to prevent
VISA driver timeout while waiting to read data from the Anritsu VNA.
Added AnritsuVNA class to the DAQ project for controlling the Anritsu
37247C vector network analyser.
Created a new build configuration (AnritsuVNA) for building the Anritsu
VNA class library.