GenericProject: put different languages into separate project parts.

This is in preparation for changes to the ProjectParts, where one part
can only hold files for 1 language.

Change-Id: I5e9a1a803ecc3ecbb36added0d0094df63922549
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/genericprojectmanager/genericproject.h

@@ -94,6 +94,8 @@ private:
     QStringList processEntries(const QStringList &paths,
                                QHash<QString, QString> *map = 0) const;
 
+    void refreshCppCodeModel();
+
     Manager *m_manager;
     QString m_fileName;
     QString m_filesFileName;