libesmtp: add ssl support, new upstream URL

Signed-off-by: Othmar Truniger <github@truniger.ch>

libs/libesmtp/Makefile

 #
-# Copyright (C) 2008-2015 OpenWrt.org
+# Copyright (C) 2008-2016 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 
 PKG_NAME:=libesmtp
 PKG_VERSION:=1.0.6
-PKG_RELEASE:=2
-PKG_MD5SUM:=c4fedc999b6c3820296b0eb92cc2e252
+PKG_RELEASE:=3
 
 PKG_MAINTAINER:=Othmar Truniger <github@truniger.ch>
 PKG_LICENSE:=LGPL-2.0+
 PKG_LICENSE_FILES:=COPYING
 
-PKG_SOURCE_URL:=http://www.stafford.uklinux.net/libesmtp
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/tru7/libesmtp.git
+PKG_SOURCE_VERSION=10e9a6df9f76da610941addf71b9a3cbf94f2e9f
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 
 PKG_BUILD_PARALLEL:=1
   SECTION:=libs
   CATEGORY:=Libraries
   TITLE:=A Library for Posting Electronic Mail
-  URL:=http://www.stafford.uklinux.net/libesmtp/
-  DEPENDS:=+libpthread
+  URL:=https://github.com/tru7/libesmtp.git
+  DEPENDS:=+libpthread +libopenssl
 endef
 
-CONFIGURE_ARGS += \
-	--without-openssl
-
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libesmtp-config $(1)/usr/bin/