8207744: Clean up inconsistent use of opendir/closedir versus opendir64/closedir64

Reviewed-by: bsrbnd, mbaesken, bchristi, simonis

src/java.base/share/native/libjli/wildcard.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -100,6 +100,14 @@
 #include <dirent.h>
 #endif /* Unix */
 
+#if defined(_AIX)
+  #define DIR DIR64
+  #define dirent dirent64
+  #define opendir opendir64
+  #define readdir readdir64
+  #define closedir closedir64
+#endif
+
 static int
 exists(const char* filename)
 {