Updated the notification system. Main changes are:

- the notification system is now a service, p3Notify, that is a public RsNotify.
- RsNotify does nothing except providing a registration system for new notify clients.
- Clients should derive a notify client from the NotifyClient class and register it to rsNotify
- all registered clients get all notifications, so only derive the needed methods. This should allow 
  plugins to get notifications as well.
- updated the code to call RsServer::notify()->[notification method] from inside libretroshare
- pqiNotify has been removed.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6996 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/util/rsdir.cc

@@ -33,7 +33,6 @@
 #include "util/rsdir.h"
 #include "util/rsstring.h"
 #include "util/rsrandom.h"
-#include "pqi/pqinotify.h"
 #include "retroshare/rstypes.h"
 #include "rsthreads.h"
 #include <iostream>

libretroshare/src/util/rsdiscspace.cc

@@ -26,6 +26,7 @@
 #include <iostream>
 #include <stdexcept>
 #include <time.h>
+#include "rsserver/p3face.h"
 #include "retroshare/rsfiles.h"
 #include "retroshare/rsiface.h"
 #include "retroshare/rsinit.h"
@@ -194,7 +195,7 @@ bool RsDiscSpace::checkForDiscSpace(RsDiscSpace::DiscLocation loc)
 	bool res = _current_size[loc] > _size_limit_mb ;
 
 	if(_last_res[loc] && !res)
-		rsicontrol->getNotify().notifyDiskFull(loc,_size_limit_mb) ;
+		RsServer::notify()->notifyDiskFull(loc,_size_limit_mb) ;
 
 	_last_res[loc] = res ;