Fix Mark's mistakes

- Added range checks when adding data to hits. Now an error
is thrown instead of potentially getting core dump.

in THcDrifthChamberPlane::DefineVariable and output.def

Fixed mistake in calculating focal plane time from hodoscope
Change to check if hit has a corrected time.
Then change to use GetPosTOFCorrectedTime instead of GetPosCorrectedTime
and same for neg

  evio .so now gets copied to top of podd directory

Copy evio into podd directory

double-qoute mangling

  Default is to use new "invadc" parameters.  Use old style
  by setting Xtofusinginvadc=0

  in THcHodoscope

   in THcHodoscope::FineProcess

Lot's of changes to
 THcScintillator::ProcessHits
 THcHodoscope::EstimateFocalPlaneTimes
 THcHodoscope::FineProcess

  Replace > with >= so fGoodScinHits can get set

  Add a new parameter Xaero_tdc_offset to make sure valid tdc
  hits from a reference time corrected tdc are positive.
  Accept first first positve tdc hit after applying offset.
  Move array filling in CoarseProcess into Decode

  THcRawHodoHit gives reference time corrected TDC values
  THcScintillator plane adds a per plane offset to the raw tdc value
  First positive TDC value after adding offset is used

  Fix bad Addmodule argument (refchan)
  Print warning if expected reference time is missing
     (Probably means event is bad)

  (Assignment probably not actually done with these objects,
  so we might want to remove these methods.)

  May want to use a hit class that doesn't inherit from THcHodoscope
  as the Cerenkov is not using Neg tubes or TDCs.

  Separate methods for ref time subtracted and raw hits