add make rules to fetch actor bundles

Makefile

@@ -57,6 +57,14 @@ build/.update-modules:
 
 # end git modules
 
+# builtin actor bundles
+builtin-actor-bundles:
+	./build/builtin-actors/fetch-bundles.sh
+
+BUILD_DEPS+=builtin-actor-bundles
+
+.PHONY: builtin-actor-bundles
+
 ## MAIN BINARIES
 
 CLEAN+=build/.update-modules
@@ -362,4 +370,4 @@ print-%:
 	@echo $*=$($*)
 
 circleci:
-	go generate -x ./.circleci
+	go generate -x ./.circleci