Added a fatalPerror function to simplify error handling.
diff --git a/busybox.h b/busybox.h
index 7f4d55f..e55f17c 100644
--- a/busybox.h
+++ b/busybox.h
@@ -345,6 +345,7 @@
extern void usage(const char *usage) __attribute__ ((noreturn));
extern void errorMsg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void fatalError(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
+extern void fatalPerror(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
const char *modeString(int mode);
const char *timeString(time_t timeVal);