Revert "HADOOP-11449 / HADOOP-10320 ; reverting patch 6cda3a7 which triggered regression in javadocs on some java8 compilers (stevel on behalf of cnauroth)"

This reverts commit fe7df5b4d87298571da45562402976810899b6a9.

Conflicts:
	hadoop-common-project/hadoop-annotations/src/main/java/org/apache/hadoop/classification/InterfaceStability.java

hadoop-common-project/hadoop-annotations/src/main/java/org/apache/hadoop/classification/InterfaceStability.java

@@ -35,6 +35,7 @@ import org.apache.hadoop.classification.InterfaceAudience.Public;
  * <li>Classes that are {@link Private} are to be considered unstable unless
  * a different InterfaceStability annotation states otherwise.</li>
  * <li>Incompatible changes must not be made to classes marked as stable.</li>
+ * </ul>
  */
 @InterfaceAudience.Public
 @InterfaceStability.Evolving