libupnp: downgrade to 1.8.6

The newer libupnp is causing problems with libupnpp. While the latter has
migraded to using a different library, it still has support for older
libupnp. Keep using it.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libupnp/Makefile

@@ -1,12 +1,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libupnp
-PKG_VERSION:=1.12.0
+PKG_VERSION:=1.8.6
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=@SF/pupnp
-PKG_HASH:=1bda3939976a9a2901382233db39379ce993b59a0e7fd0dd781212a44a9b44a2
+PKG_HASH:=65faf240f8ccee50cc0e7fe7fb21dcd79f743fc227a9b652b091f50f6956c2c7
 
 PKG_MAINTAINER:=Ted Hess <thess@kitschensync.net>
 PKG_LICENSE:=BSD-3-Clause