make a few struct bb_applet members conditional
rename sllep_and_die -> xfunc_die
make fflush_stdout_and_exit NOFORK-safe
fix some buglets found by randomconfig
diff --git a/libbb/perror_msg_and_die.c b/libbb/perror_msg_and_die.c
index 7521e71..3a06b65 100644
--- a/libbb/perror_msg_and_die.c
+++ b/libbb/perror_msg_and_die.c
@@ -7,10 +7,6 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
 #include "libbb.h"
 
 void bb_perror_msg_and_die(const char *s, ...)
@@ -20,5 +16,5 @@
 	va_start(p, s);
 	bb_vperror_msg(s, p);
 	va_end(p);
-	sleep_and_die();
+	xfunc_die();
 }