add since 1.6.3 to equals and hashcode

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@277971 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/Location.java

@@ -150,6 +150,7 @@ public class Location implements Serializable {
      * @param other the object to compare to.
      * @return true if the other object contains the same information
      *              as this object.
+     * @since Ant 1.6.3
      */
     public boolean equals(Object other) {
         if (this == other) {
@@ -167,6 +168,7 @@ public class Location implements Serializable {
     /**
      * Hash operation.
      * @return a hash code value for this location.
+     * @since Ant 1.6.3
      */
     public int hashCode() {
         return toString().hashCode();