-no args for -P

git-svn-id: https://gnunet.org/svn/gnunet@34417 140774ce-b5e7-0310-ab8b-a85725594a96
-indentation, doxygen

git-svn-id: https://gnunet.org/svn/gnunet@34418 140774ce-b5e7-0310-ab8b-a85725594a96
-fix message type

git-svn-id: https://gnunet.org/svn/gnunet@34419 140774ce-b5e7-0310-ab8b-a85725594a96