Add tools/checksum.py tool.

diff --git a/tools/checksum.py b/tools/checksum.py
new file mode 100755 (executable)
index 0000000..8c7665d
--- /dev/null
+++ b/tools/checksum.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+# Script to report the checksum of a file.
+#
+# Copyright (C) 2009  Kevin O'Connor <kevin@koconnor.net>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+
+import sys
+
+def main():
+    data = sys.stdin.read()
+    ords = map(ord, data)
+    print "sum=%x\n" % sum(ords)
+
+if __name__ == '__main__':
+    main()