added comment on MSG_DONTWAIT

ChangeLog

@@ -1,8 +1,12 @@
-$Id: ChangeLog,v 1.130 2009/12/10 15:32:55 stpohle Exp $
+$Id: ChangeLog,v 1.131 2009/12/18 11:08:44 stpohle Exp $
 
 Version 0.11.8.99
 ==================
 
+- fixed: on certain networks, recvfrom hasen't returned. Even select
+         returns with data aviable recvfrom got stuck because of no data.
+         Added MSG_DONTWAIT here as flag. (only on linux)
+
 - fixed: counter pkg_lastid became > 32767 almost messages are lost 
          in cache managment 
          patch from: Michel Bernay