Merge branch 'hotfix/3127' into develop

Forward port zendframework/zendframework#3127

Conflicts:
	library/Zend/Cache/Storage/Adapter/Memcached.php
	library/Zend/Cache/Storage/Adapter/MemcachedOptions.php

src/Protocol/Imap.php

@@ -547,7 +547,7 @@ public function fetch($items, $from, $to = null)
         } elseif ($to === INF) {
             $set = (int) $from . ':*';
         } else {
-            $set = (int) $from . ':' . (int)$to;
+            $set = (int) $from . ':' . (int) $to;
         }
 
         $items = (array) $items;

src/Protocol/Pop3.php

@@ -297,7 +297,7 @@ public function getList($msgno = null)
         $line = strtok($result, "\n");
         while ($line) {
             list($no, $size) = explode(' ', trim($line));
-            $messages[(int)$no] = (int) $size;
+            $messages[(int) $no] = (int) $size;
             $line = strtok("\n");
         }