Qbs: Delay reparsing of the project

Makes the whole thing feel more responsive:-)

Change-Id: I1b3941ab42bb1a281c0923e3826b00d1f1400abe
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/qbsprojectmanager/qbsprojectfile.cpp

@@ -96,7 +96,7 @@ bool QbsProjectFile::reload(QString *errorString, ReloadFlag flag, ChangeType ty
     Q_UNUSED(flag)
     if (type == TypePermissions)
         return true;
-    m_project->parseCurrentBuildConfiguration();
+    m_project->delayParsing();
     return true;
 }