credits patch by (Måns Rullgård <mru at mru dot ath dot cx>)

Originally committed as revision 3583 to svn://svn.ffmpeg.org/ffmpeg/trunk

CREDITS

@@ -22,6 +22,7 @@ Mike Melanson
 Loren Merritt
 Michael Niedermayer
 François Revol
+Måns Rullgård
 Roman Shaposhnik
 Dieter Shirley
 Konstantin Shishkov