Fix scoping / global state problems in tests by using DI in Default Extension. Also removing a bunch of old fashioned phpdoc annotations that are superseded by namespaces.

docs/programmers/caching/caching-custom.md

@@ -63,7 +63,7 @@ to invoke your custom CacheResource implementation.
      *   INDEX(`modified`)
      * ) ENGINE = InnoDB;</pre>
      *
-     * @package CacheResource-examples
+    
      * @author Rodney Rehm
      */
     class My_CacheResource_Mysql extends \Smarty\Cacheresource\Custom {
@@ -211,7 +211,7 @@ to invoke your custom CacheResource implementation.
      * Note that memcache has a limitation of 256 characters per cache-key.
      * To avoid complications all cache-keys are translated to a sha1 hash.
      *
-     * @package CacheResource-examples
+    
      * @author Rodney Rehm
      */
     class My_CacheResource_Memcache extends \Smarty\Cacheresource\KeyValueStore {