From Marco Jez, fixes to osgFX so that effects are compiled correctly.

Fixed title name of osgkeyboardmouse example.

include/osgFX/Validator

@@ -45,6 +45,7 @@ namespace osgFX
         META_StateAttribute(osgFX, Validator, VALIDATOR);
 
         void apply(osg::State &state) const;
+        void compile(osg::State &state) const;
 
         inline int compare(const osg::StateAttribute &sa) const;