tools/libressl: Update to 2.5.0 and use mirrors

Updates LibreSSL to 2.5.0 and switches from main site to mirrors as primary source.

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

tools/libressl/Makefile

@@ -8,12 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libressl
-PKG_VERSION:=2.3.4
-PKG_MD5SUM:=b81d990b7eceb156df6eaa7e9f4a353e
+PKG_VERSION:=2.5.0
+PKG_MD5SUM:=8652bf6b55ab51fb37b686a3f604a2643e0e8fde2c56e6a936027d12afda6eae
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/
+PKG_SOURCE_URL:=http://mirror.ox.ac.uk/pub/OpenBSD/LibreSSL \
+	http://ftp.jaist.ac.jp/pub/OpenBSD/LibreSSL \
+	http://ftp.openbsd.org/pub/OpenBSD/LibreSSL
 
 HOST_BUILD_PARALLEL:=1