Merge pull request #1950 from rovangju/master

Added realpath to VcsDriver constructor to address issues with relative file paths...

src/Composer/Repository/Vcs/VcsDriver.php

@@ -44,6 +44,13 @@ abstract class VcsDriver implements VcsDriverInterface
      */
     final public function __construct(array $repoConfig, IOInterface $io, Config $config, ProcessExecutor $process = null, RemoteFilesystem $remoteFilesystem = null)
     {
+        
+        if (self::isLocalUrl($repoConfig['url'])) {
+            $repoConfig['url'] = realpath(
+                preg_replace('/^file:\/\//', '', $repoConfig['url'])
+            );
+        }
+        
         $this->url = $repoConfig['url'];
         $this->originUrl = $repoConfig['url'];
         $this->repoConfig = $repoConfig;