-document that symbian might now be broken

git-svn-id: https://gnunet.org/svn/libmicrohttpd@32414 140774ce-b5e7-0310-ab8b-a85725594a96
-update doxygen rules

git-svn-id: https://gnunet.org/svn/libmicrohttpd@32415 140774ce-b5e7-0310-ab8b-a85725594a96