Add PTHREAD_CFLAGS to Libs: in libupnp.pc, as assumed by acx_pthread.m4 (fixes binutils-gold link failure)
Add PTHREAD_CFLAGS to Libs: in libupnp.pc, as assumed by acx_pthread.m4
(fixes binutils-gold link failure)


git-svn-id: d1790394607e06e2b90be8c532f5c99d80a2d557@550 119443c7-1b9e-41f8-b6fc-b9c35fce742c

BelledonneCommunications/libupnp,mrjimenez/pupnp,commshare/pupnp,BelledonneCommunications/libupnp,commshare/pupnp,BelledonneCommunications/libupnp,mrjimenez/pupnp,mrjimenez/pupnp,commshare/pupnp,mrjimenez/pupnp,BelledonneCommunications/libupnp