Merge pull request #24226 from owncloud/files_psr4

lib/private/Files/Cache/Cache.php

lib/private/Files/Cache/CacheEntry.php

lib/private/Files/Cache/FailedCache.php

lib/private/Files/Cache/HomeCache.php

lib/private/Files/Cache/HomePropagator.php

lib/private/Files/Cache/MoveFromCacheTrait.php

lib/private/Files/Cache/Propagator.php

lib/private/Files/Cache/Scanner.php

lib/private/Files/Cache/Storage.php

lib/private/Files/Cache/Updater.php

lib/private/Files/Cache/Watcher.php

lib/private/Files/Cache/Wrapper/CacheJail.php

lib/private/Files/Cache/Wrapper/CachePermissionsMask.php

lib/private/Files/Cache/Wrapper/CacheWrapper.php

lib/private/Files/Config/CachedMountInfo.php

lib/private/Files/Config/LazyStorageMountInfo.php

lib/private/Files/Config/MountProviderCollection.php

lib/private/Files/Config/UserMountCache.php

lib/private/Files/Config/UserMountCacheListener.php

lib/private/Files/FileInfo.php