[PATCH] Do not install compatibility symlink for what we do not install

We sometimes do not install git-send-email nor git-http-pull; do not
unconditionally create symlinks to them.

Signed-off-by: Patrick Mauritz <oxygene@studentenbude.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>

cmd-rename.sh

@@ -4,7 +4,9 @@ test -d "$d" || exit
 while read old new
 do
 	rm -f "$d/$old"
+	if [ -x "$d/$new" ]; then
 	ln -s "$new" "$d/$old"
+	fi
 done <<\EOF
 git-add-script	git-add
 git-archimport-script	git-archimport