Fix special character for author name (Kristian Lyngstøl)

Otherwise this author shows up with different spellings in the plugin
gallery.

plugins/funkytown/denon_x311_volume

@@ -1,6 +1,6 @@
 #!/usr/bin/gawk -f
 # Denon x311 volume-plugin for munin
-# Copyright (C) 2010 Kristian Lyngstol
+# Copyright (C) 2010 Kristian Lyngstøl
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

plugins/other/proc_

@@ -72,12 +72,12 @@ Dunno.
 
 =head1 AUTHOR
 
-Kristian Lyngstol <kristian@redpill-linpro.com>
+Kristian Lyngstøl <kristian@redpill-linpro.com>
 Trygve Vea <tv@redpill-linpro.com>
 
 =head1 THANKS
 
-Thanks to Kristian Lyngstol, I stole most of the code in this plugin from his
+Thanks to Kristian Lyngstøl, I stole most of the code in this plugin from his
 varnish_-plugin, which is a really nice outline of how a wildcardplugin should
 look like.
 

plugins/varnish/varnish4_

@@ -4,7 +4,7 @@
 # varnish4_ - Munin plugin to for Varnish 4.x
 # Copyright (C) 2009  Redpill Linpro AS
 #
-# Author: Kristian Lyngstol <kristian@bohemians.org>
+# Author: Kristian Lyngstøl <kristian@bohemians.org>
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -77,13 +77,13 @@ correctly.
 
 =head1 PATCHES-TO
 
-Please send patches to Kristian Lyngstol <kristian@bohemians.org>
+Please send patches to Kristian Lyngstøl <kristian@bohemians.org>
 and/or varnish-misc@varnish-cache.org for significant changes. Munin SVN
 is the authoritative repository for this plugin.
 
 =head1 AUTHOR
 
-Kristian Lyngstol <kristian@bohemians.org>
+Kristian Lyngstøl <kristian@bohemians.org>
 
 =head1 MODIFICATIONS