Add some @since 2.2 markers

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/branches/MATH_2_X@1067494 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math/distribution/AbstractIntegerDistribution.java

@@ -299,6 +299,7 @@ public abstract class AbstractIntegerDistribution extends AbstractDistribution
      * only true here is meaningful.
      *
      * @return true (always but at Integer.MIN_VALUE because of the nature of discrete support)
+     * @since 2.2
      */
     public boolean isSupportLowerBoundInclusive() {
         return true;
@@ -310,6 +311,7 @@ public abstract class AbstractIntegerDistribution extends AbstractDistribution
      * only true here is meaningful.
      *
      * @return true (always but at Integer.MAX_VALUE because of the nature of discrete support)
+     * @since 2.2
      */
     public boolean isSupportUpperBoundInclusive() {
         return true;

src/main/java/org/apache/commons/math/exception/util/ArgUtils.java

@@ -24,6 +24,7 @@ import java.util.ArrayList;
  * constructors of exceptions.
  *
  * @version $Revision$ $Date$
+ * @since 2.2
  */
 public class ArgUtils {
     /**