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.
Minor changes in the comp_beam_engine_hcana.C script.
Set $SWAPRASTERXY to 0 in mapedit_rasterbcm.pl. The raster X and Y are already swapped
in the map files. Setting this to 1 causes the channel assignments to swap thereby causing HCANA to
use the wrong channels for the raster signal types. The signal types are hard-coded in HCANA.
Merge branch 'buddhiniw-raster'