libbb.h now includes ../busybox.h. This way, files in libbb that have
BB_[FEATURE] #defines won't be ignored. Credit to Magnus Damm for spotting
this.
diff --git a/include/libbb.h b/include/libbb.h
index cbc1436..2937b48 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -35,6 +35,10 @@
 
 #include <features.h>
 
+#ifndef _BB_INTERNAL_H_
+#include "../busybox.h"
+#endif
+
 #if __GNU_LIBRARY__ < 5
 /* libc5 doesn't define socklen_t */
 typedef unsigned int socklen_t;