suppress warnings about easch <applet>_main() having

no preceding prototype

coreutils/seq.c

@@ -11,6 +11,7 @@
 #include <stdlib.h>
 #include "busybox.h"
 
+int seq_main(int argc, char **argv);
 int seq_main(int argc, char **argv)
 {
 	double last, first, increment, i;