Moving all class declarations to EDE_PANEL_APPLET_CLASS macro.

This change should make base applet code easier to modify without modifying applets itself. This is also
a starting point for implementation of better routing netwm messages to applets without adding specific listener
to each applet.

ede-panel/applets/clock/Clock.cpp

@@ -11,7 +11,7 @@ EDELIB_NS_USING(run_async)
 
 static void clock_refresh(void *o);
 
-class Clock : public Fl_Box {
+EDE_PANEL_APPLET_CLASS(Clock, Fl_Box) {
 private:
 	int  hour;
 	char buf[64], tbuf[128];