Update Gnulib to v0.0-3575-g128e4b8. * m4/gnulib-cache.m4: Add `func'.
* m4/gnulib-cache.m4: Add `getaddrinfo'. * libguile/Makefile.am (libguile_la_LDFLAGS): Add `$(GETADDRINFO_LIB) $(HOSTENT_LIB) $(SERVENT_LIB)'.