gnunet: use PKG_MIRROR_HASH

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

net/gnunet/Makefile

@@ -2,10 +2,12 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gnunet
 PKG_SOURCE_VERSION:=f7ef810b99d2c47d5a07739ecb0be1667f32567f
+PKG_MIRROR_HASH:=1f1fbccff28240ca8c1980b3f7c95ee413a2978f6a245838d7acaae19db3f586
+
 PKG_VERSION:=0.10.2-git-20170313-$(PKG_SOURCE_VERSION)
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://gnunet.org/git/gnunet.git
 PKG_SOURCE_PROTO:=git