usage.c: remove reference to busybox.h
*: s/include "busybox.h"/include "libbb.h"

diff --git a/coreutils/basename.c b/coreutils/basename.c
index f4307d6..f59d7a8 100644
--- a/coreutils/basename.c
+++ b/coreutils/basename.c
@@ -20,7 +20,7 @@
  * 3) Save some space by using strcmp().  Calling strncmp() here was silly.
  */
 
-#include "busybox.h"
+#include "libbb.h"
 
 /* This is a NOFORK applet. Be very careful! */