Merge pull request #9 from buddhiniw/raster

Raster decoding related updates on replay_both.C and output_replay_both.def scripts
Merge pull request #10 from buddhiniw/raster

Added the raster variables into the analysis scripts for HCANA & ENGINE comparisions
Fixed the wrong variable definitions for raster signals. raster signals should n
ot be arrays!

Adding the Macros/mapedit_rasterbcm.pl for converting ENGINE type channel map files to HCAN type map files. I initially added this script to hcana/examples. But I realize the better location for it is the hcana_replay directory.

Adding  Macros/comp_beam_engine_hcana.C to generate plots for raster signal cmoparision. For each signal, the script will generate an overlayed histogram and a difference histogram.