sudo: adjust libtool comment

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sudo/sudo.mk

@@ -8,7 +8,8 @@ SUDO_VERSION = 1.8.10p3
 SUDO_SITE = http://www.sudo.ws/sudo/dist
 SUDO_LICENSE = ISC BSD-3c
 SUDO_LICENSE_FILES = doc/LICENSE
-# Ships a non-release libtool that isn't patch-friendly
+# Ships a beta libtool version hence our patch doesn't apply.
+# Run autoreconf to regenerate ltmain.sh.
 SUDO_AUTORECONF = YES
 SUDO_CONF_OPTS = \
 		--without-lecture \