MAGETWO-36072: Move dev/tools/Magento/Tools/Di/compiler.php

- Changes based on CR feedback.

setup/src/Magento/Setup/Console/Command/DiCompileMultiTenantCommand.php

@@ -30,7 +30,6 @@ use Magento\Setup\Module\Di\Definition\Compressor;
 use Magento\Setup\Module\Di\Definition\Serializer\Igbinary;
 use Magento\Setup\Module\Di\Definition\Serializer\Standard;
 
-
 /**
  * Command to generate all non-existing proxies and factories, and pre-compile class definitions,
  * inheritance information and plugin definitions

setup/src/Magento/Setup/Module/Di/Code/Reader/ClassesScanner.php

@@ -37,7 +37,7 @@ class ClassesScanner implements ClassesScannerInterface
     /**
      * Retrieves list of classes for given path
      *
-     * @param string $path
+     * @param array $path
      * @return array
      * @throws FileSystemException
      */