add to changelog

ChangeLog

@@ -21,6 +21,8 @@ version 0.9.5 -- unreleased
 	mysql:
 	 . Fixed case where odd combination of configuration options caused sqldump
 	   backups to get overwritten with an empty file (Closes: #402679)
+	rdiff:
+	 . Added cstream support to allow for bandiwdth limiting
     fixed automake 'make install' bug that failed if /etc/backup.d already
     existed
     changed spaces to tabs in Makefile.am