package/mpfr: bump to version 3.1.6

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/mpfr/mpfr.hash

@@ -1,2 +1,2 @@
-# Locally calculated after checking pgp signature
-sha256	015fde82b3979fbe5f83501986d328331ba8ddf008c1ff3da3c238f49ca062bc	mpfr-3.1.5.tar.xz
+# From http://lists.gnu.org/archive/html/info-gnu/2017-09/msg00004.html
+sha256 7a62ac1a04408614fccdc506e4844b10cf0ad2c2b1677097f8f35d3a1344a950  mpfr-3.1.6.tar.xz

package/mpfr/mpfr.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MPFR_VERSION = 3.1.5
+MPFR_VERSION = 3.1.6
 MPFR_SITE = http://www.mpfr.org/mpfr-$(MPFR_VERSION)
 MPFR_SOURCE = mpfr-$(MPFR_VERSION).tar.xz
 MPFR_LICENSE = LGPL-3.0+