Modify THcFormula and THcParmList to match changes to THaFormula
     (needed for reports)
  Small changes in THcInterface and detector classes for compatibility
     with new OO decoder and podd 1.6

Conflicts:
	Makefile

  Enforce variable conventions
  Default using_scin and using_prune selection to off
  Break different track selection methods into different class methods

section of THcHallCSpectrometer to be clearer.
Does not follow the fortran in detail, but should be doing the same
thing.

  There is some unclear code in the track selection that could
  do with improvement.

  Move hodo_slop retrieval to THcHodoscope
  Get fPosCenter array length from fNelem instead of fixing length at 16
  Remove now unneeded THcScintillatorPlane creation method

  Don't start variables that are not member variables with f
  Declare temporary variables as locally as possible
  Remove some unused member variables from THcHodoscope.h

   H.hod.hgoodstarttime -> H.hod.goodstarttime

calorimeter.

negative side PMT signals from the HMS and SOS calorimeters.

    Changes in the Ycor method of the THcShower class, and in
    examples/PARAM/hcana.param input file.

Minimm value of normalized energy  fNormETot and minum value of number of
cherenkov photo electrons, fNCerNPE, is added to parameter files for the
calculation good scintillator event for tracking efficiency.
They are  optional parameters

fScinShould and fScinDid are set to 0 or 1
and only incrmented when Shower and Cerenkov detectors are setup.

This file was missing.

NCerNPE and fNormETot be optional parameters
When there is not the  !fChern || !fShower and instead just
not increment the counter.

If calorimeter and cherenkov is not added to SOS or HMS then it prints
a warning message and does not calcualte the efficiency for that
spectrometer.

Minimm value of normalized energy and minum value of number of
cherenkov photo electrons is added to parameter files for the
calculation of tracking efficiency.

  Variable found in a report template is first tested to see if it is a
  Hall C style parameter (in gHcParms).  If not, then tested to see if it
  is a global variable (in gHaVars).

  Move some stuff outside of # tracks > 0 test

  Clean up THcShower.h and THcShower.cxx.
  typedef vector<THcShowerHit*> THcShowerHitList by
  typedef set<THcShowerHit*> THcShowerHitList.
  Remove inheritance of class THcShowerCluster from THcShowerHitList.
  Define THcShowerCluster as THcShowerHitList, aka set<THcShowerHit*>.
  Remove inheritance of class THcShowerClusterList from
        THcShClusterList, a.k.a. vector<THcShowerCluster*> container.
  Define THcShowerClusterList as vector<THcShowerCluster*>.
  Rename THcShowerHitSet by THcShowerHitList.
  Rename HitList (related to the HMS calorimeter) to HitSet.
  Add operator< in THcShowerHit class, in order to have THcShowerHitSet
    objects to be properly sorted.

Modified THcShower and THcHallCSpectrometer

    THcHallCSpectrometer inherits from THaSpectrometer which has method
    GetPcentral and a member fPcentral.
     THcHallCSpectrometer had been using fPCentral but decided to
    use fPcentral.
    Delete fPCentral in THcHallCSpectrometer.h
    Replace all fPCentral  by fPcentral in ReadDatabase and FindVertices methods.