Fixed EM cal geometry
new file: macro/gun.mac modified: scripts/gun_test.py new file: scripts/strip_position.cxx new file: solid/GEM_sidis.xml modified: solid_sidis.xml modified: ../src/EMCalorimeterSOLID_geo.cpp new file: ../src/NH3Target_geo.cpp
new file: macro/gun.mac modified: scripts/gun_test.py new file: scripts/strip_position.cxx new file: solid/GEM_sidis.xml modified: solid_sidis.xml modified: ../src/EMCalorimeterSOLID_geo.cpp new file: ../src/NH3Target_geo.cpp