Full b1pi analysis including all steps:
a) Geant simmulation      -> hdgeant
b) smearing               -> mcsmear
c) analysis               -> hd_root --plugin=phys_tree
d) generating histograms  -> anal1.C (needs b1pi_xxx.C)
e) creating plots         -> makeallplots.C

all steps are done withing one scriped called "mkevents.sh"