Add Reinhard and myself as release managers.

Originally committed as revision 22132 to svn://svn.ffmpeg.org/ffmpeg/trunk

MAINTAINERS

@@ -41,6 +41,7 @@ project server                          Diego Biurrun, Mans Rullgard
 mailinglists                            Michael Niedermayer, Baptiste Coudurier
 presets                                 Robert Swain
 metadata subsystem                      Aurelien Jacobs
+release management                      Diego Biurrun, Reinhard Tartler
 
 
 libavutil