Fixings

- fixed test for semaphore
- fixed some issues
- changed namespace in Tests back to "src/"
- changed namings

src/Core/Cache/RedisCacheDriver.php

@@ -14,7 +14,7 @@ use Friendica\Core\Cache;
 class RedisCacheDriver extends BaseObject implements IMemoryCacheDriver
 {
 	/**
-	 * @var Redis
+	 * @var \Redis
 	 */
 	private $redis;