FW2.21: Update RPC interface for FW2.21 featuring the nTrig loop on NIOS
level.
Use Pg_Triggers() in hal::daqTrigger() instead of running the loop
locally on the PC side.
FW UPDATE to 2.21 REQUIRED, featuring the n-tiggers loop on NIOS level.
Merge branch 'master' of github.com:psi46/pxar