Use builddir not project dir for expanding relative libs paths

Change-Id: Id9743739fafe42c3d0f695cec0342b68544c64b0
Reviewed-on: http://codereview.qt-project.org/5992


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp

@@ -619,7 +619,7 @@ Utils::Environment Qt4RunConfiguration::baseEnvironment() const
     if (node) {
         const QStringList libDirectories = node->variableValue(LibDirectoriesVar);
         if (!libDirectories.isEmpty()) {
-            const QString proDirectory = QFileInfo(node->path()).absolutePath();
+            const QString proDirectory = node->buildDir();
             foreach (QString dir, libDirectories) {
                 // Fix up relative entries like "LIBS+=-L.."
                 const QFileInfo fi(dir);