stunnel: bump to version 5.16

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

package/stunnel/stunnel.hash

@@ -1,2 +1,2 @@
-# From http://www.stunnel.org/pipermail/stunnel-announce/2015-January/000090.html
-sha256	87b34a74061861d1edd2ab238c73eb989b3d0a17e44574b7b6ead1a16aae38c8	stunnel-5.09.tar.gz
+# From https://www.stunnel.org/pipermail/stunnel-announce/2015-April/000098.html
+sha256	b6b7e93fb2626eaabae1c8474e1dfa23962cfde8fa35c8602289fcaa4f53608d	stunnel-5.16.tar.gz

package/stunnel/stunnel.mk

@@ -4,11 +4,13 @@
 #
 ################################################################################
 
-STUNNEL_VERSION = 5.09
+STUNNEL_VERSION = 5.16
 STUNNEL_SITE = http://www.usenix.org.uk/mirrors/stunnel/archive/5.x
 STUNNEL_DEPENDENCIES = openssl
 STUNNEL_CONF_OPTS = --with-ssl=$(STAGING_DIR)/usr --with-threads=fork \
 	--disable-libwrap
+STUNNEL_CONF_ENV = \
+	ax_cv_check_cflags___fstack_protector=$(if $(BR2_ENABLE_SSP),yes,no)
 STUNNEL_LICENSE = GPLv2+
 STUNNEL_LICENSE_FILES = COPYING COPYRIGHT.GPL