don't evaluate features in the cumulative pass

we don't use anything the features may set up, so loading them just
wastes time. this may change if we start processing extracompilers
properly.

src/plugins/qt4projectmanager/qt4nodes.cpp

@@ -1025,9 +1025,9 @@ bool Qt4ProFileNode::evaluate()
 {
     bool parserError = false;
     if (ProFile *pro = m_readerExact->parsedProFile(m_projectFilePath)) {
-        if (!m_readerExact->accept(pro))
+        if (!m_readerExact->accept(pro, ProFileEvaluator::LoadAll))
             parserError = true;
-        if (!m_readerCumulative->accept(pro))
+        if (!m_readerCumulative->accept(pro, ProFileEvaluator::LoadPreFiles))
             parserError = true;
         pro->deref();
     } else {