Added/modified comments to the HMS calorimeter header files

examples/PARAM/52949/htracking.param

examples/PARAM/52949/scal.param.vt.52843

examples/PARAM/52949/scal.pos

examples/PARAM/52949/scer.param.vt

examples/PARAM/52949/sdc.param.vt.53000

examples/PARAM/52949/sdc.pos

examples/PARAM/52949/sdc_offsets.param

examples/PARAM/52949/sdebug.param

examples/PARAM/52949/shodo.param.vt

examples/PARAM/52949/shodo.pos

examples/PARAM/52949/sos.driftmap.vt.52930

examples/PARAM/52949/sosflags.param

examples/PARAM/52949/stracking.param

examples/hodtest_mkj.C

examples/output_52949.def

src/THcShower.cxx

src/THcShower.h

src/THcShowerCluster.h

src/THcShowerHit.h

src/THcShowerPlane.cxx