Added gcddump to dump parsed GCD to files which can later be reassembled

into a GCD.

gcddump.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Dumps the structure of the given GCD file to file.
+"""
+
+from grmn import Gcd
+import sys
+
+if len(sys.argv) < 3:
+    print("Syntax: {} GCDFILE DUMPFILE (extension .rcp will be added)".format(sys.argv[0]))
+    sys.exit(1)
+
+FILE = sys.argv[1]
+OUTFILE = sys.argv[2]
+
+print("Opening {}".format(FILE))
+gcd = Gcd(FILE)
+print("Dumping to {}.rcp".format(OUTFILE))
+gcd.dump(OUTFILE)