put notmart out of his misery on this one =) let containment tell the world when it's context changes

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=857852

containment.cpp

@@ -1269,6 +1269,8 @@ Context* ContainmentPrivate::context()
 {
     if (!con) {
         con = new Context(q);
+        q->connect(con, SIGNAL(changed(Plasma::Context*)),
+                   q, SIGNAL(contextChanged(Plasma::Context*)));
     }
 
     return con;

containment.h

@@ -373,6 +373,11 @@ class PLASMA_EXPORT Containment : public Applet
          */
         void configureRequested();
 
+        /**
+         * The activity associated to this containemnt has changed
+         */
+        void contextChanged(Plasma::Context *context);
+
     public Q_SLOTS:
         /**
          * Informs the Corona as to what position it is in. This is informational