Added missing test class.

core/src/test/java/org/springframework/security/expression/support/SecurityRules.java

@@ -0,0 +1,16 @@
+package org.springframework.security.expression.support;
+
+public class SecurityRules {
+    public static boolean disallow() {
+        return false;
+    }
+
+    public static boolean allow() {
+        return false;
+    }
+
+    public static boolean isJoe(String s) {
+        return "joe".equals(s);
+    }
+}
+