h1bos breaks INI file with more than 10000 epics channels

Epics channels aren't supposed to be numbered past 49999, but h1bos keeps numbering past 50000

Meanwhile, the channels which are supposed to start at 50k still start there, so h1bos ends up with duplicate channel numbers in the INI file. It's unclear how that effects the DAQ stream in 5.1.1 and earlier. It's possible the DAQ stream is correct.

In 5.1.2, the epics process complains that the channels 50k and above are missing from the INI, because the check filters out channels 50k and above as not EPICS channels.