weaveutil now depends on plugin code

Makefile

@@ -71,7 +71,7 @@ testrunner: $(RUNNER_EXE) $(TEST_TLS_EXE)
 $(WEAVER_EXE) $(WEAVEPROXY_EXE) $(WEAVEUTIL_EXE): common/*.go common/*/*.go net/*.go net/*/*.go
 $(WEAVER_EXE): router/*.go ipam/*.go ipam/*/*.go db/*.go nameserver/*.go prog/weaver/*.go
 $(WEAVEPROXY_EXE): proxy/*.go prog/weaveproxy/*.go
-$(WEAVEUTIL_EXE): prog/weaveutil/*.go net/*.go
+$(WEAVEUTIL_EXE): prog/weaveutil/*.go net/*.go plugin/net/*.go plugin/ipam/*.go
 $(SIGPROXY_EXE): prog/sigproxy/*.go
 $(KUBEPEERS_EXE): prog/kube-peers/*.go
 $(WEAVENPC_EXE): prog/weave-npc/*.go npc/*.go npc/*/*.go