Makefile:
Add trg_track.o and semi_dilution.o to OBJ3

structures.inc and structures_init.inc:
1)  added theta_tarq,phi_tarq,beta,phi_s,phi_c to event structure
2)  added rasterx to event_target structure
3)  added theta_tarq, phi_targ, beta to event_main structure 

simulate.inc and simulate_init.inc:
1)  extended debug to 6 element array
2)  add targ_Bangle,targ_Bphi,targ_pol,drift_to_cal,sign_hadron,
    tgt_field_file,using_tgt_field
3)  put these three variables in the grnl common block
4)  add dilu to ntupvars record


dbase.f:
1) define sign_hadron for various cases
1) convert targ_Bangle and targ_Bphi to radians
2) change debug intialization to 6
3) register targ_Bangle,targ_Bphi,targ_pol, set to 0
4) register using_tgt_field,tgt_field_file,and drift_to_ndet

event.f
1) add rasterx calc
2) in complete_ev: 
   a) add targ_new_x,targ_new_y,targx,targy,targz
   b) calculate phi_targ - azimuthal angle between target polarization
       and scattering plane
   c) calculate beta, angle between target polarization and reaction plane
   d) calculate theta_tarq, angle between target vector and q vector
   e) calculate Collines and Sievers angles
3) in complete_recon_ev: 
   a) add targ_new_x,targ_new_y,targx,targy,targz
   b) calculate phi_targ - azimuthal angle between target polarization
       and scattering plane
   c) calculate beta, angle between target polarization and reaction plane
   d) calculate theta_tarq, angle between target vector and q vector
   e) calculate Collines and Sievers angles
4) in complete_main: set ntup.dilu=semi_dilution

simc.f
1) add ang_targ_parm,ang_targ_earm
2) add Mark's calculation of angle between target polarization and 
   spectrometers
3) add call to trgInit
4) in montecarlo:
   a) add frx, set = -target.rasterx (makes left pos. as looking downstream)
   b) add calls to track_from_target, then project back to z=0 plane
   c) in calls to single arm MC's, add frx, using_tgt_field, and the sign 
      of the particle

mc_hms.f (and others)
1) add frx,using_tgt_field, and sign_part to variables passed
2) calculate ctheta and stheta
3) call track to target if using target field