HV-424: Fix Joda Time bootstrap class name.

Author: kevinpollet

hibernate-validator/src/main/java/org/hibernate/validator/metadata/ConstraintHelper.java

@@ -85,7 +85,7 @@
  */
 public class ConstraintHelper {
 
-	private static final String JODA_TIME_CLASS_NAME = "org.joda.time.base.ReadableInstant";
+	private static final String JODA_TIME_CLASS_NAME = "org.joda.time.ReadableInstant";
 
 	private final ConcurrentHashMap<Class<? extends Annotation>, List<Class<? extends ConstraintValidator<?, ?>>>> builtinConstraints =
 			new ConcurrentHashMap<Class<? extends Annotation>, List<Class<? extends ConstraintValidator<?, ?>>>>();