[FIXED JENKINS-15316] Harmless but noisy exception running builds on some Windows systems in non-English locale.

Falling back to just checking for ‘FileSystemException’ since detail message about missing required privilege may be translated.

core/src/main/java/hudson/Util.java

@@ -1071,7 +1071,7 @@ public class Util {
             if (x2 instanceof UnsupportedOperationException) {
                 return true; // no symlinks on this platform
             }
-            if (Functions.isWindows() && String.valueOf(x2).contains("A required privilege is not held by the client.")) {
+            if (Functions.isWindows() && String.valueOf(x2).contains("java.nio.file.FileSystemException")) {
                 if (warnedSymlinks.compareAndSet(false, true)) {
                     LOGGER.warning("Symbolic links enabled on this platform but disabled for this user; run as administrator or use Local Security Policy > Security Settings > Local Policies > User Rights Assignment > Create symbolic links");
                 }