frs changes and some mhtdc changes from JEL
- Fixed a Z correction from the TPCs and added missing variables as mentioned by JEL. aoq calculations using a4.
- Added Gainshift function added by JEL earlier, you can choose to remove this function but you need to remove links in make files and also delete the include in FrsCal2Hit
- Added MHTDC analysis by JEL and some missing variables.
This pull should make properly and I have also tested it on a macro jb_s101.C also committed.
N.B. AoQ still appears to be broken, idk why but it is off by a bit when comparing old and newly generated FRS data. Combing through the old FrsCal2Hit is a bit terrible right now since the changes are quite drastic.