Compiled and installed an updated real time model. It acquires the four QPD segments, compute sum and differences, and normalize. I also added three experimental peak tracking components, that will be used to track in real time the amplitude and frequency of the disk modes.

I also created a summary medm screen that can be used to control all the QPD readout. It can be opened from any terminal with the command 'cr1'. I haven't added the peak tracking parts yet.

The X_NORM_OUT and Y_NORM_OUT signals are high passed at 500 Hz, to get rid of low frequency stuff that can affect the peak tracking.