THcSpacePoint
  1) added fSetStubFlag which is intialized
     to kFALSE in constructor and set to kTRUE
     when SetStub is called.
   2) added method GetSetStubFlag which
      returns fSetStubFlag.

THcDriftchamber
   1) In ProcessHits increased fHits reserve to 40
   2) In FindSpacePoints use fSpacePoints->Delete();
   3) In LeftRight ,only SetStub if the Stub is fit.

THcDC
   1) In LinkStubs
      a) only link stubs if number of total spacepoints <10
      b) only link stubs if both spacepoints have SetStubFlag true

THcDCHit.h
   1) In constructor initalize fLR to 0

THcDCTrack.cxx
   1) AddSpacePoint check if fnSP < 10

  Will correct sync problems in d(e,e'p) run coin_all_3302.dat and SIDIS
  run coin_all_3621.dat.

To correct 3621, run slipstudy.C as is.  To correct 3302, change kTRUE
to kFALSE in the line:

synccheck->SetResync(kTRUE);

  THcTimeSyncEvtHandler is a toolbox to study and correct various
  synchronization issues.
  It checks that the timestamp in the FADC250s agrees with the timestamp
  in the TI modules.
  It also checks if the event counter in the 1190 modules agrees with the
  event counter in the TI modules.
  It can be used to correct the 1190 synchronization problem we have
  seen in ROC3 by writing out a corrected data file.  See the next commit
  for an example of how it is used.

1) Have time cut on TrigDet reference time for TDC and ADC,
       to select reference time from multiple hits

2) Have time window to select best TDC or ADC reference time subtracted
   time  hit for each channel.

In LeftRight method when using SmallAngle Approximation and
 additional condition that the wires in adjacent plane have to
 be within 0.51cm.

Add call ConvertTimeToDist in SubtractStartTime method

Modify so default starttime is -1000.

Modify so if no hits in scintillator then EstimateFocalPlane is not called.

Fix type in GetSp2_ID()

THcDriftChamberPlane

  1) Remove subtraction of hodoscope starttime from ProcessHits
    which is called by THcDC::Decode.
  The hodoscope start time is determined in hodoscope Decode
   which is called after THcDC::Decode. So drift chamber
   was using the starttime from the previous event.

   2) Create method SubtractStartTime which is called by THcDC:CoarseTrack

THcDriftChamber
    1) Move fChambers[ic]->ProcessHits() to CoarseTrack
    2) Before looping through fChambers[ic]->ProcessHits() in CoarseTrack
        loop through all planes and call fPlanes[ip]->SubtractStartTime()

Removed cuts in calculation of fXAtCer and fYAtCer

Add time windows for pos and neg ADC selection.

Added fGoodPosAdcMult and fGoodNegAdcMult variables

Remove cuts for  calculation of fXAtAero and fYAtAero

  Correction is done in the hitlist by comparing the trigger time
  from the TI to the trigger time in the FADC.  These generally have
  a fixed offset.  A FUDGE offset is included to make the difference
  between the FADC and TI times zero or close to zero.

  The FADC delivers times in units of 0.0625 ns.  The trigger time is in
  units of 4ns.  So the FADCs will be shifted by 64 units for each unit
  of trigger time slippage.

fFPTimeAll is the average focal plane time from all
  scintillator times. In EstimatedFocalPlaneTime fFPTimeAll is set to
  starttime which is the average FP time without using the DC track.

If there are tracks, then a focal plane time is calculated
for each track using the track information to improve the focal
plane time calculation and save for each track. Previously
 fFPTimeAll was being filled for each track, so in effect
fFPTimeAll was being filled with the FP time of the last track.
ALso there was no check that nFPTimeSum was not zero when
calculating average FP time, so one could get NaN values for
fFPTimeAll

To fix the problem , added  and modified line

Double_t fptime=-1000;
if (nFPTimeSum>0) fptime = FPTimeSum/nFPTimeSum;

And moved setting fFPTimeAll to THcHodoscope::FineProcess
Now fFPTimeAll is set the the average focal plane time of
the golden track.

  Newer root version
  Do make and scons
  Do ldd and version check after building
  Print python and scons versions

  Usual trigger time offsets for the 3 FADC crates are set
  in slipstudy.C

  This event type handler can be used to gather statistics on the slippage
  of trigger times in FADC250 headers.
  It looks at the relative trigger times between the ADCs and the TI modules
  and counts the number of times the relative times shift.

  The ADC trigger times will have a small offset relative to the TI trigger
  times.  The method AddExpectedOffset(roc, offset) allows the setting
  of this offset on a crate by crate basis.  If expected offsets are not
  set, the first event is used to determine the offsets.

  (Otherwise breaks with root 5)

  We'll start with version 0.90.0 and increment the second number up to 99.
  Goal is to declare a verison 1.0.0 sometime over the summer.

  To change the version, edit both SConscript.py and Makefile.

Modify THcDCTrack::TrackFit to calculate residuals for each plane
   without the plane involved in the track.

Add tree variable residualExclPlane

   THcFormula::DefinedValue is removed as
     THaFormula::DefinedValue now handles the kCutScaler and kCutNCalled types

      Includes THaFormula patches needed for THcFormula simplification

  Fix annoyance of spurious extra prompt on exit
  Add -l, -v and --version command line options

1) Add to tree variable arrays stub_x,stub_xp,stub_y and stub_yp
    and ncombos. These are arrays of the number of spacepoints in
    the chamber.

2) In ReadDatabase
   a) new variable  fRatio_xpfp_to_xfp which is set differently
       for HMS and SHMS. Used in method LeftRight
   b) Set default value of optional parameter fStubMaxXPDiff = 999.

3)  Modified method LeftRight
   a) Previously only for the old fHMSStyleChambers would
      the code only select LR combinations where
      the difference between stub_xp to space_point_X*ratio is
        with in the fStubMaxXPDiff .
      The ratio came from the HMS optics.
   b) Changed LeftRight so that if fStubMaxXPDiff < 100
         then the code will only select LR combinations where
      the difference between stub_xp to space_point_X*ratio is
        with in the fStubMaxXPDiff . The ratio is
      set in ReadDataBase according to the spectrometer.


5) In FindSpacePoints add some comments.

Modified THcSpacePoint.h to have public member that keeps track
   of the spacepoint ID number for each chamber.
   Used in THcDC::LinkStubs

Modified THcDC.cxx and h
1) Add tree variables sp1_id and sp2_id which are the integer
    ID in the spacepoints in each chamber used in the golden track.
     The ID refers to index in array of spacepoints created in
     THcDriftChamber.cxx

2) Modify LinkStub to fill sp1_id and sp2_id for each track

3) For golden track fill sp1_ID_best and sp2_ID_best

Add methods for setting the spacepoint integer identifier
  for two spacepoints used in the track.

Add calls:
+  Double_t GetStubX() {return fStub[0];};
+  Double_t GetStubXP() {return fStub[2];};
+  Double_t GetStubY() {return fStub[1];};
+  Double_t GetStubYP() {return fStub[3];};

  Just replaces Process method.

Add AdcTimeWindowMin and Max for each pmt

Add tree variables GoodPosAdcMult and fGoodPosAdcHitUsed

Fix sign mistake in correction for vertical pointing offset
   in THcExtTarCor.cxx

Write Hall C version of THcReactionPoint

Add new ntuple variables
goodAdcMult == the number of hits in raw ADc for that channel
goodAdcHitUsed == which hit number of the raw ADC hits passed the
                      the ADC time window cut

Modified fAdcTimeWindowMin  and fAdcTimeWindowMax to be arrays
  that are the size of the number of Cerenkov pmts.