Fix decoding of newfstatat syscall on x86-64

* file.c (printstat64) [LINUX && X68_64]: If tracing a 64-bit
process redirect to printstat.
Fixes RH#529316 "Field values shown for "newfstatat" system
call are incorrect"

file.c

@@ -1079,6 +1079,13 @@ printstat64(struct tcb *tcp, long addr)
 # endif
 #endif /* LINUXSPARC */
 
+#if defined LINUX && defined X86_64
+	if (current_personality == 0) {
+		printstat(tcp, addr);
+		return;
+	}
+#endif
+ 
 	if (umove(tcp, addr, &statbuf) < 0) {
 		tprintf("{...}");
 		return;