gnutls: security bump to version 3.3.17.1

Fixes GNUTLS-SA-2015-3 - Double free in certificate DN decoding.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gnutls/gnutls.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	80a471c723572a43ddbe75d7825a3275f640650cc99eae42963ab39b9d0b7552	gnutls-3.3.16.tar.xz
+sha256	b40f158030a92f450a07b20300a3996710ca19800848d9f6fd62493170c5bbb4	gnutls-3.3.17.1.tar.xz

package/gnutls/gnutls.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 GNUTLS_VERSION_MAJOR = 3.3
-GNUTLS_VERSION = $(GNUTLS_VERSION_MAJOR).16
+GNUTLS_VERSION = $(GNUTLS_VERSION_MAJOR).17.1
 GNUTLS_SOURCE = gnutls-$(GNUTLS_VERSION).tar.xz
 GNUTLS_SITE = ftp://ftp.gnutls.org/gcrypt/gnutls/v$(GNUTLS_VERSION_MAJOR)
 GNUTLS_LICENSE = GPLv3+ LGPLv2.1+