libconfig: bump to 1.5

Add hash file.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libconfig/libconfig.hash

@@ -0,0 +1,2 @@
+# Locally computed:
+sha256  e31daa390d8e4461c8830512fe2e13ba1a3d6a02a2305a02429eec61e68703f6  libconfig-1.5.tar.gz

package/libconfig/libconfig.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBCONFIG_VERSION = 1.4.9
+LIBCONFIG_VERSION = 1.5
 LIBCONFIG_SITE = http://www.hyperrealm.com/libconfig
 LIBCONFIG_LICENSE = LGPLv2.1+
 LIBCONFIG_LICENSE_FILES = COPYING.LIB