Run-parts code cleanup and minor fixes

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>

Makefile

@@ -33,7 +33,7 @@ CFLAGS += -march=pentium-m
 #CFLAGS += -DDIRECTISA
 
 # Use built-in run-parts instead of /bin/run-parts
-#CFLAGS += BUILTIN_RUNPARTS
+CFLAGS += -DBUILTIN_RUNPARTS
 
 ifneq ($(USER), "user")
 CFLAGS += -DDEFUSER=\"$(USER)\"
@@ -67,6 +67,8 @@ finit.o: finit.c Makefile
 
 finit-mod.o: finit-mod.c Makefile
 
+helpers.o: helpers.c  Makefile
+
 dist:
 	rm -Rf $(PKG)
 	mkdir -p $(PKG)/contrib