change strange depend to libbb.h, but require busybox.h
diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c
index 6205595..9031435 100644
--- a/debianutils/run_parts.c
+++ b/debianutils/run_parts.c
@@ -52,7 +52,7 @@
 #include <getopt.h>
 #include <stdlib.h>
 
-#include "libbb.h"
+#include "busybox.h"
 
 static const struct option runparts_long_options[] = {
 	{ "test",		0,		NULL,		't' },