MCOL-641 Fix alter table add wide decimal column.

This patch also removes CalpontSystemCatalog::BINARY and
ddlpackage::DDL_BINARY that were added during the initial
stages of the work on MCOL-641.

dbcon/execplan/calpontsystemcatalog.cpp

@@ -227,10 +227,6 @@ const string colDataTypeToString(CalpontSystemCatalog::ColDataType cdt)
             return "udouble";
             break;
 
-        case CalpontSystemCatalog::BINARY:
-            return "binary";
-            break;            
-        
         default:
             break;
     }