Setting new threshold levels

In this example we which to move the nominal value of the ACD zero suppression threshold to 30 PHA counts. There a several ways to do this. Here we will do it in two steps: 1) make a new vote file with the zero suppression threshold at thirty counts, with the FILE_TAG ``plus_30'', but also pointed to by the alias ``Nominal'', 2) rebuild all the affected configurations.

  prompt> bin/PrecinctManager.py ACD_Pha --copy Nominal -T plus_30 -a -b \
          -A Nominal -r countsAbovePedestal=30
    Backup alias on test_ACD_Mask.xml to Nominal_old
    Set alias on ACD_Mask_Nominal_070601220147.xml to Nominal
  prompt> bin/ConfigManager.py --build -n
    [...lots of output while simulating build...]
  prompt> bin/ConfigManager.py --build
    [...lots of output while really doing build...]