moved BB_BANNER to applets/version.c file: make kernel like version,
removed depend loop: busybox.h depend with BB_BT, and all sources depend with busybox.h
diff --git a/include/busybox.h b/include/busybox.h
index 9fb9503..18f9dd5 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -21,11 +21,7 @@
#error "Sorry, this libc version is not supported :("
#endif
-#ifndef BB_EXTRA_VERSION
-#define BB_BANNER "BusyBox v" BB_VER " (" BB_BT ")"
-#else
-#define BB_BANNER "BusyBox v" BB_VER " (" BB_EXTRA_VERSION ")"
-#endif
+extern const char BB_BANNER[];
#include <features.h>