message.yp: add GPL v3 boilerplate and add Jesse as copyright holder

cnotmuch/message.py

@@ -1,3 +1,21 @@
+#    This file is part of cnotmuch.
+#
+#    cnotmuch is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    cnotmuch is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with cnotmuch.  If not, see <http://www.gnu.org/licenses/>.
+#
+#    (C) Copyright 2010 Sebastian Spaeth <Sebastian@SSpaeth.de>
+#                       Jesse Rosenthal <jrosenthal@jhu.edu>
+        
 from ctypes import c_char_p, c_void_p, c_long, c_bool
 from datetime import date
 from cnotmuch.globals import nmlib, STATUS, NotmuchError, Enum