Merge branch '1.X' of https://github.com/apache/commons-beanutils.git into 1.X

Author: garydgregory

src/main/java/org/apache/commons/beanutils/MethodUtils.java

@@ -126,7 +126,7 @@ public int hashCode() {
      * which may introduce memory-leak problems.
      * </p>
      */
-    private static boolean CACHE_METHODS = true;
+    private static volatile boolean CACHE_METHODS = true;
 
     /** An empty class array */
     private static final Class<?>[] EMPTY_CLASS_PARAMETERS = new Class[0];