[zen-49] Correct import statements across framework

- Ran a script that would create multiple import statements out of multi-line
  import statements, and which would sort all import statements in alphabetic
  order. Script is at https://gist.github.com/3079222 and was run by dropping
  into the library/Zend folder and typing (in zsh)
  "for file in **/*.php;do php /path/to/replace-uses.php $file; done"

src/Storage/Adapter/Apc.php

@@ -17,8 +17,8 @@
 use Zend\Cache\Exception;
 use Zend\Cache\Storage\AvailableSpaceCapableInterface;
 use Zend\Cache\Storage\Capabilities;
-use Zend\Cache\Storage\ClearByPrefixInterface;
 use Zend\Cache\Storage\ClearByNamespaceInterface;
+use Zend\Cache\Storage\ClearByPrefixInterface;
 use Zend\Cache\Storage\FlushableInterface;
 use Zend\Cache\Storage\IterableInterface;
 use Zend\Cache\Storage\TotalSpaceCapableInterface;

src/Storage/Plugin/ClearExpiredByFactor.php

@@ -13,8 +13,8 @@
 use Traversable;
 use Zend\Cache\Exception;
 use Zend\Cache\Storage\ClearExpiredInterface;
-use Zend\Cache\Storage\StorageInterface;
 use Zend\Cache\Storage\PostEvent;
+use Zend\Cache\Storage\StorageInterface;
 use Zend\EventManager\EventManagerInterface;
 
 /**