Started implementing flags to handle the sharing mode.

What works:
- the gui shows the flags in ShareManager
- the flags are loaded/saved to ft_shared.cfg and passed on to FileIndexMonitor
What does not work yet:
- the flags are not accounted for yet by FileIndexMonitor

In addition:
- simplified the directories dialog in Preferences, so that it calls the ShareManager instead of dupplicating the directories management 
code that becomes larger.
- setup the ShareManager to be a singleton, so as to coherently call it from different places.




git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1486 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/ShareManager.h

@@ -32,7 +32,10 @@ class ShareManager : public QDialog
 {
   Q_OBJECT
 
-public:
+	public:
+	  static void showYourself() ;
+
+private:
   /** Default constructor */
   ShareManager( QWidget *parent = 0, Qt::WFlags flags = 0);
   /** Default destructor */
@@ -53,10 +56,12 @@ private slots:
 
   void addShareDirectory();
   void removeShareDirectory();
+  void updateFlags(bool);
 
 private:
 
 
+  static ShareManager *_instance ;
 
   /** Define the popup menus for the Context menu */
   QMenu* contextMnu;