libnetfilter_conntrack: switch to git

In order to build conntrack-tools from git, a newer version of
libnetfilter_conntrack is required. As 1.0.6 is currently the latest
release, switch to git.

b0a7cf7 include: expose a copy of nf_conntrack_common.h
f68f7b3 conntrack: fix missing break in setobjopt_undo_dnat()
79dac5a conntrack: revert getobjopt_is_nat() condition
b266523 libnetfilter_conntrack: bump version to 1.0.7
e870432 labels: don't crash on NULL labelmap

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

package/libs/libnetfilter-conntrack/Makefile

@@ -8,14 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libnetfilter_conntrack
-PKG_VERSION:=1.0.6
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
-PKG_SOURCE_URL:= \
-	http://www.netfilter.org/projects/libnetfilter_conntrack/files/ \
-	ftp://ftp.netfilter.org/pub/libnetfilter_conntrack/
-PKG_HASH:=efcc08021284e75f4d96d3581c5155a11f08fd63316b1938cbcb269c87f37feb
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://git.netfilter.org/libnetfilter_conntrack
+PKG_SOURCE_DATE:=2017-07-25
+PKG_SOURCE_VERSION:=e870432649955d377a73ee5a72cb23f0f6b5e4c5
+PKG_MIRROR_HASH:=6891e6bea956d5d3514524918f439dfe8b5806397d8d40d1afc69b9bfebc1d57
+
 PKG_MAINTAINER:=Jo-Philipp Wich <jo@mein.io>
 
 PKG_FIXUP:=autoreconf