MEMFS Python script: add copyright

memfs.py

@@ -1,4 +1,15 @@
 #!/usr/bin/env python
+
+#
+# (C) Copyright 2005- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# In applying this licence, ECMWF does not waive the privileges and immunities
+# granted to it by virtue of its status as an intergovernmental organisation
+# nor does it submit to any jurisdiction.
+#
 from __future__ import print_function
 
 import argparse
@@ -201,5 +212,5 @@ for line in f.readlines():
         print(line, file=g)
 
 
-
-print("MEMFS: Done", time.time() - start)
+elapsed = time.time() - start
+print("MEMFS: Done in %.2f seconds" % elapsed)