gnupg: bump to version 1.4.20

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

package/gnupg/gnupg.hash

@@ -1,2 +1,2 @@
-# From http://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html
-sha1	5503f7faa0a0e84450838706a67621546241ca50	gnupg-1.4.19.tar.bz2
+# From https://lists.gnupg.org/pipermail/gnupg-announce/2015q4/000382.html
+sha1	cbc9d960e3d8488c32675019a79fbfbf8680387e	gnupg-1.4.20.tar.bz2

package/gnupg/gnupg.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GNUPG_VERSION = 1.4.19
+GNUPG_VERSION = 1.4.20
 GNUPG_SOURCE = gnupg-$(GNUPG_VERSION).tar.bz2
 GNUPG_SITE = ftp://ftp.gnupg.org/gcrypt/gnupg
 GNUPG_LICENSE = GPLv3+