The git-cvsserver documentation claims that the server will set
-k modes if appropriate which is not really the case. On the other
hand the available gitcvs.allbinary variable is not documented at
all. Fix both these issues by rewording the related paragraph.
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de> Signed-off-by: Junio C Hamano <junkio@cox.net>