Fix some wrong @since 3.3 tags which should be @since 3.4

Change-Id: Idafe6e041cc40a00ac52eb4ba88753c49db86988
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/api/ListBranchCommand.java

@@ -173,7 +173,7 @@ public class ListBranchCommand extends GitCommand<List<Ref>> {
 	 * @param containsCommitish
 	 *            a commit ID or ref name
 	 * @return this instance
-	 * @since 3.3
+	 * @since 3.4
 	 */
 	public ListBranchCommand setContains(String containsCommitish) {
 		checkCallable();

org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java

@@ -638,7 +638,7 @@ public class DirCacheEntry {
 	 * Get a copy of the entry's raw path bytes.
 	 *
 	 * @return raw path bytes.
-	 * @since 3.3
+	 * @since 3.4
 	 */
 	public byte[] getRawPath() {
 		return path.clone();