Merge pull request #5887 from sectus/windows_remote_paths

windows remote path treats as remote now

src/Composer/Util/Filesystem.php

@@ -477,7 +477,7 @@ class Filesystem
      */
     public static function isLocalPath($path)
     {
-        return (bool) preg_match('{^(file://|/|/?[a-z]:[\\\\/]|\.\.[\\\\/]|[a-z0-9_.-]+[\\\\/])}i', $path);
+        return (bool) preg_match('{^(file://(?!//)|/(?!/)|/?[a-z]:[\\\\/]|\.\.[\\\\/]|[a-z0-9_.-]+[\\\\/])}i', $path);
     }
 
     public static function getPlatformPath($path)