- consolidate "Sending SIG%s to all processes"; untested..

text    data     bss     dec     hex filename
   5379      32       8    5419    152b init/init.o.oorig
   5358      32       8    5398    1516 init/init.o

init/init_shared.h

@@ -1,3 +1,4 @@
 extern int kill_init(int sig);
 extern int bb_shutdown_system(unsigned long magic);
+const char * const init_sending_format = "Sending SIG%s to all processes.";