Fix valgrind with remote Linux hosts.

This reverts commit f1ccad12dc and adds the necessary code to make both
the local and the remote case work.

Task-number: QTCREATORBUG-16153
Change-Id: I233ec9d7b31ca6e076515dd03ae7400758ee0c34
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/valgrind/valgrindrunner.h

@@ -80,6 +80,7 @@ signals:
 protected slots:
     virtual void processError(QProcess::ProcessError);
     virtual void processFinished(int, QProcess::ExitStatus);
+    virtual void localHostAddressRetrieved(const QHostAddress &localHostAddress);
 
 private:
     class Private;