Add ability to list make targets

Makefile

@@ -1,4 +1,4 @@
-TARGETS := $(shell ls scripts)
+TARGETS := $(shell ls scripts|grep -ve "^util-")
 LOCAL_TARGETS := $(addprefix local-,$(TARGETS))
 
 .dapper:
@@ -18,4 +18,8 @@ $(LOCAL_TARGETS): local-%: .dapper
 
 .DEFAULT_GOAL := default
 
-.PHONY: $(TARGETS)
+.PHONY: $(list TARGETS)
+list:
+	@LC_ALL=C $(MAKE) -pRrq -f $(firstword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/(^|\n)# Files(\n|$$)/,/(^|\n)# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | grep -E -v -e '^[^[:alnum:]]' -e '^$@$$'
+# IMPORTANT: The line above must be indented by (at least one)
+#            *actual TAB character* - *spaces* do *not* work.