QmlJS: Move commonly used functions to qmlutils.h.

Change-Id: I22376d96fe575bc00a55094c06af80e32a5587e6
Reviewed-on: http://codereview.qt-project.org/6238
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

src/libs/qmljs/qmljsmodelmanagerinterface.h

@@ -85,7 +85,7 @@ public:
         // whether trying to run qmldump makes sense
         bool tryQmlDump;
         QString qmlDumpPath;
-        Utils::Environment qmlDumpEnvironment;
+        ::Utils::Environment qmlDumpEnvironment;
 
         QString qtImportsPath;
         QString qtVersionString;