extras/tools: update autoconf and automake to the latest versions

(cherry picked from commit a4f46a9cd6d5e46d37c6a28ac5a352e07d3eda5d)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

extras/tools/packages.mak

@@ -10,10 +10,10 @@ CMAKE_URL=http://www.cmake.org/files/v2.8/cmake-$(CMAKE_VERSION).tar.gz
 LIBTOOL_VERSION=2.2.10
 LIBTOOL_URL=$(GNU)/libtool/libtool-$(LIBTOOL_VERSION).tar.gz
 
-AUTOCONF_VERSION=2.68
-AUTOCONF_URL=$(GNU)/autoconf/autoconf-$(AUTOCONF_VERSION).tar.bz2
+AUTOCONF_VERSION=2.69
+AUTOCONF_URL=$(GNU)/autoconf/autoconf-$(AUTOCONF_VERSION).tar.gz
 
-AUTOMAKE_VERSION=1.11.2
+AUTOMAKE_VERSION=1.12.4
 AUTOMAKE_URL=$(GNU)/automake/automake-$(AUTOMAKE_VERSION).tar.gz
 
 PKGCFG_VERSION=0.23