- Fixed several issues with PropXtalkFrac calculation
- Added output to textfile of xtalk values
- Added TH2F for each clover's xtalk
- added missing write() to spectra.
- change to gain of one channel in gains.h
Just tidying up before some new work.
- Added much better alternate calibration support.  Gains now read from file into main at startup and then available to any function.
- Removed gains.h which was an ugly hack and is no longer needed.