9.3 release notes: Add cache of local locks

Mention this also helps in the restoring of pg_dumps.

Jeff Janes

doc/src/sgml/release-9.3.sgml

@@ -189,7 +189,7 @@
        <para>
         This speeds lock release at statement completion in
         transactions that hold many locks; it is particularly useful
-        for <application>pg_dump</>.
+        for <application>pg_dump</> and the restoring of such dumps.
        </para>
       </listitem>