add project actions Clean and Rebuild

now watch for all directories and update tree immediately

project_fs/projectfilesystemwidget.h

@@ -6,6 +6,7 @@
 #include <extensionsystem/iplugin.h>
 #include <QSortFilterProxyModel>
 #include <QFileSystemModel>
+#include <QFileSystemWatcher>
 #include <QElapsedTimer>
 #include <QMenu>
 
@@ -45,14 +46,17 @@ protected:
 	FilterDialog filter_dialog;
 	FilterDialog::Filter cur_filter;
 	QElapsedTimer tm;
+	QFileSystemWatcher fs_watcher;
+	QTreeWidgetItem * item_target;
 
 public slots:
 	void projectsChanged();
 	void filterClicked();
 
 private slots:
-	void fileChanged();
+	void currentFileChanged();
 	void startupProjectChanged();
+	void directoryChanged(const QString & path);
 
 	void on_tree_itemDoubleClicked(QTreeWidgetItem * item, int );
 	void on_lineFilter_textChanged(const QString &);
@@ -66,6 +70,8 @@ private slots:
 	void on_actionCopy_path_triggered();
 	void on_actionSet_as_startup_triggered();
 	void on_actionBuild_triggered();
+	void on_actionRebuild_triggered();
+	void on_actionClean_triggered();
 	void on_actionRun_triggered();
 	void on_actionClose_project_triggered();