List of changes between v3_5 and v3_6 
 
bivs
  bivs_geom.kumac
    ramberg:  
              Changed the tracking medium from air to vacuum for 
              inside the BIVS.
  bivs_gukine.F
    caroline: Optimize Initialization for speed-up (on "old" version)
    caroline: Initialization of variable for bivs_gustep optimization
  bivs_guout.F
    caroline: Change location of Initialization of hit_info
    caroline: Make sure  tracks with no hits are still written out
    caroline: Optimize Initialization for speed-up (on "old" version)
    caroline: Modified with bivs_gustep optimization
  bivs_gustep.F
    caroline: Take out a (debug) write statement
    caroline: Optimize initialization for speed up (on "old" version)
    caroline: Bivs_gustep simplification for optimization
  bivscom.inc
    caroline: To optimize initialization for speed (in "old" version)
    caroline: Variable used in bivs_gustep optimization
 
driver
  ckm_media.inc
    ramberg:  Add link to new DMS material
  ckmgeom.F
    ramberg:  Add new material for straw construction.  Also print out KEAT
              positions accurately.
    vavilov:  New material #31 ('$HELIUM') gaseous helium at 20C and 
              atm. pressure is defined. A tracking medium #ckmmed_helium
              ('ums helium') is redefined to consist of this material.
  gustep.F
    jurgen:   fix format so linux likes it
    vavilov:  Bug fixed which prevented an initial particle to be 
              forced to decay.
  gutrak.F
    vavilov:  Bug fixed which prevented an initial particle to be 
              forced to decay.
 
keat
  keat_geom.F
    ramberg:  Put KEAT stations at furthest separation possible (3.2 m)
 
read
  CKM_read_user.F
    kushnir:  Add kaon fitting based on just 2 KEAT chambers
  GNUmakefile.read
    kushnir:  Add kaon fitting based on just 2 KEAT chambers
  keatana.F
    kushnir:  Add kaon fitting based on just 2 KEAT chambers
  pwc_08_120_lrg.config
    ramberg:  PWC configuration to reflect KEAT separation
 
straw
  straw_geom.F
    ramberg:  Change straw construction material
 
vvs
  vvs_gukine.F
    caroline: Optimization of Initialization for speedup(on "old" version)
    jurgen:   fix double cvs log entry
    caroline: Initialize variable used in vvs_gustep optimization
  vvs_guout.F
    caroline: Change location of hit-info Initialization
    caroline: correction for VVS skeeping tracks without hits
    caroline: Optimize initialization for speedup (on "old' version)
    caroline: change do loop limits
    caroline: Code modified for vvs_gustep optimization
  vvs_gustep.F
    caroline: Optimization of Initialization for speedup (in "old" version)
    caroline: Cleaning old variables
    caroline: Code simplification for optimization
  vvscom.inc
    caroline: optimization of Initializations for speedup (on "old" version)
    caroline: Variable added for vvs_gustep optimization