libxslt: revision bump to address open CVEs

- Add patches copied from Debian to address open CVEs
- Update mail address of maintainer
- Fix a typo
- Add --disable-silent-rules for verbose build output

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

libs/libxslt/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2014 OpenWrt.org
+# Copyright (C) 2014 - 2018 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libxslt
 PKG_VERSION:=1.1.28
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:= \
@@ -20,7 +20,7 @@ PKG_MD5SUM:=9667bf6f9310b957254fdcf6596600b7
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING
 
-PKG_MAINTAINER:=Jiri Slachta <slachta@cesnet.cz>
+PKG_MAINTAINER:=Jiri Slachta <jiri@slachta.eu>
 
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
@@ -43,7 +43,7 @@ define Package/libexslt
   SECTION:=libs
   CATEGORY:=Libraries
   DEPENDS:=+libxslt
-  TITLE:=Gnome XSLT library Extention
+  TITLE:=Gnome XSLT library Extension
   URL:=http://xmlsoft.org/XSLT/EXSLT/
 endef
 
@@ -64,6 +64,7 @@ define Package/xsltproc/description
 endef
 
 CONFIGURE_ARGS+= \
+	--disable-silent-rules \
 	--enable-shared \
 	--enable-static \
 	--without-python \