Merge remote-tracking branch 'origin/4.3'

Conflicts:
	qbs/modules/qtc/qtc.qbs
	qtcreator.pri

Change-Id: I6d89ea588de955f5d878500b59285d3adde6c77d

src/plugins/qbsprojectmanager/qbsproject.cpp

@@ -738,7 +738,7 @@ void QbsProject::updateDocuments(const QSet<QString> &files)
     foreach (IDocument *doc, currentDocuments) {
         if (filesToRemove.contains(doc->filePath().toString())) {
             m_qbsDocuments.remove(doc);
-            delete doc;
+            doc->deleteLater();
         }
     }
     QSet<IDocument *> toAdd;