pySim-prog: rename card_handler option to card_handler_config

The option and also the dest variable in the code are currently named
card_handler. This might be confusing since the variable actually refers
to a config file and therefore should be called "card_handler_config"

Change-Id: If93751e815cb46f9ff3f56b54e612d77fe1a6dfd
diff --git a/pySim-prog.py b/pySim-prog.py
index 3b69bb3..a3235b4 100755
--- a/pySim-prog.py
+++ b/pySim-prog.py
@@ -200,7 +200,7 @@
 	parser.add_option("--dry-run", dest="dry_run",
 			help="Perform a 'dry run', don't actually program the card",
 			default=False, action="store_true")
-	parser.add_option("--card_handler", dest="card_handler", metavar="FILE",
+	parser.add_option("--card_handler", dest="card_handler_config", metavar="FILE",
 			help="Use automatic card handling machine")
 
 	(options, args) = parser.parse_args()
@@ -740,8 +740,8 @@
 	# Batch mode init
 	init_batch(opts)
 
-	if opts.card_handler:
-		ch = CardHandlerAuto(sl, opts.card_handler)
+	if opts.card_handler_config:
+		ch = CardHandlerAuto(sl, opts.card_handler_config)
 	else:
 		ch = CardHandler(sl)