Fix merge issues with corrupt packet groups

This should fix directbroadcast/l0tools#5

These changes make the merge processes much more selective about what is merged. Any packet groups that even smells slightly corrupt will be dropped from the merged product.

Also included in this merge request is a new CLI tool called edosl0inspect that is basically just edosl0util on sterioids.

edosl0util/cli/crgen.py

@@ -17,13 +17,14 @@ def main():
         "--prev_pds_file",
         help="previous PDS data file, used for detecting cross-file packet gaps",
     )
+    parser.add_argument("--scid", type=int, choices=[15, 159, 177], default=157)
     args = parser.parse_args()
     util.configure_logging(args)
-    crgen(args.input_file, args.output_file, args.prev_pds_file)
+    crgen(args.input_file, args.output_file, args.prev_pds_file, args.scid)
 
 
-def crgen(input_file, output_file=None, prev_pds_file=None):
-    cr = build_cr(input_file, prev_pds_file)
+def crgen(input_file, output_file=None, prev_pds_file=None, scid=157):
+    cr = build_cr(input_file, prev_pds_file, scid)
     if output_file is None:
         output_file = cr["pds_id"] + ".PDS"
     logger.info("writing {}".format(output_file))