Latest version of podd Release-150.
Address some minor issues reported by cppcheck

These were related to a) scope of some variable declarations, and b) use
of pre-increment vs. post-increment of non-primitive types (this has a
slight performance hit due to the way that pre- vs. post-increment
operators are overloaded in C++.

Also cleaned up a few places where initialized variables were not being
used.
Cherenkov class without any change in map and parameter files.
I deleted a line from the file: examples/PARAM/hcana.param. I wrote this line
just for test purpose.
An attempt to add Cherenkov class.
Undo testing changes.
  Remove link to engine
  Remove quick.csh script
  Undo changes to hodtest.C and hodtest_cuts.def
Remove incorrect Cherekov histogram definitions.
Add include of hcer.param to general.param.