add a note to clarify that these functions did not exist before the latest release

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@203627 c90b9560-bf6c-de11-be94-00142212c4b1

reference/memcache/functions/memcache-addserver.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <refentry id="function.Memcache-addServer">
  <refnamediv>
   <refname>Memcache::addServer</refname>
@@ -27,7 +27,13 @@
    <function>Memcache::close</function>.
    You can also use the <function>memcache_add_server</function> function.
   </para>
- 
+
+  <note>
+   <para>
+    This function has been added to Memcache version 2.0.0.
+   </para>
+  </note>
+
  </refsect1>
 
  <refsect1 role="parameters">

reference/memcache/functions/memcache-getextendedstats.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <refentry id="function.Memcache-getExtendedStats">
  <refnamediv>
   <refname>Memcache::getExtendedStats</refname>
@@ -21,6 +21,12 @@
    You can also use the <function>memcache_get_extended_stats</function> function.
   </para>
 
+  <note>
+   <para>
+    This function has been added to Memcache version 2.0.0.
+   </para>
+  </note>
+ 
  </refsect1>
 
  <refsect1 role="returnvalues">

reference/memcache/functions/memcache-setcompressthreshold.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <refentry id="function.Memcache-setCompressThreshold">
  <refnamediv>
   <refname>Memcache::setCompressThreshold</refname>
@@ -20,6 +20,12 @@
    You can also use the <function>memcache_set_compress_threshold</function> function.
   </para>
 
+  <note>
+   <para>
+    This function has been added to Memcache version 2.0.0.
+   </para>
+  </note>
+ 
  </refsect1>
 
  <refsect1 role="parameters">