stunnel: Update from 5.14 to 5.20

* 010_fix_getnameinfo.patch is no longer needed
* 011-cron-without-pthread-fix.patch added, fixes incorrect
  ifdef when building without pthreads

Signed-off-by: Michael Haas <haas@computerlinguist.org>

net/stunnel/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=stunnel
-PKG_VERSION:=5.14
+PKG_VERSION:=5.20
 PKG_RELEASE:=1
 
 PKG_LICENSE:=GPL-2.0+
@@ -17,7 +17,7 @@ PKG_LICENSE_FILES:=COPYING COPYRIGHT.GPL
 
 PKG_SOURCE_URL:=http://stunnel.cybermirror.org/archive/5.x/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_MD5SUM:=e716501960dc6856d80f92547298f724
+PKG_MD5SUM:=3264375026c2b496b5d258e243222de8
 
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1