package/autoconf-archive: bump to version v2015.02.24

Fix the AX_CXX_COMPILE_STDCXX_11 macro which was broken in the
previous release.

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/autoconf-archive/autoconf-archive.hash

@@ -1,2 +1,2 @@
 # Computed locally
-sha256 dfd460d23a9690322dee29a355ea285b5774f37383d3741cf77a4ad6a11a7e81  autoconf-archive-2015.02.04.tar.xz
+sha256 69715bdd078f552ca85e498a94543e11cb8bcdf0359e659b84d84d19372b0dc5  autoconf-archive-2015.02.24.tar.xz

package/autoconf-archive/autoconf-archive.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-AUTOCONF_ARCHIVE_VERSION = 2015.02.04
+AUTOCONF_ARCHIVE_VERSION = 2015.02.24
 AUTOCONF_ARCHIVE_SOURCE = autoconf-archive-$(AUTOCONF_ARCHIVE_VERSION).tar.xz
 AUTOCONF_ARCHIVE_SITE = $(BR2_GNU_MIRROR)/autoconf-archive
 AUTOCONF_ARCHIVE_LICENSE = GPLv3+ with exception