Integrated various changes worked on at the Glasgow Science Center. Changes

include change the CameraManipulators so they work with double for time
instead of float.  Also added support for DataType to osg::StateAttribute
and StateSet so that they can be set to either STATIC or DYNAMIC, this
allows the optimizer to know whether that an attribute can be optimized
or not.

include/osgUtil/CameraManipulator

@@ -37,6 +37,16 @@ class OSGUTIL_EXPORT CameraManipulator : public GUIEventHandler
         /** Return node if attached.*/
         virtual const osg::Node* getNode() const { return NULL; }
 
+
+        void setHomeToUseNode() { _homeToUseNode=true; }
+        void setHome(const osg::Vec3& eye,const osg::Vec3& center,const osg::Vec3& up)
+        {
+            _eyeHome = eye;
+            _centerHome = center;
+            _upHome = up;
+            _homeToUseNode = false;
+        }
+
         /** Move the camera to the default position. 
             May be ignored by manipulators if home functionality is not appropriate.*/
         virtual void home(const GUIEventAdapter& ,GUIActionAdapter&) {}
@@ -53,6 +63,11 @@ class OSGUTIL_EXPORT CameraManipulator : public GUIEventHandler
 	// Reference pointer to a camera
 	osg::ref_ptr<osg::Camera>	_camera;
 
+        bool _homeToUseNode;
+        osg::Vec3 _eyeHome;
+        osg::Vec3 _centerHome;
+        osg::Vec3 _upHome;
+
 };
 
 }

include/osgUtil/GUIEventAdapter

@@ -73,7 +73,7 @@ class GUIEventAdapter : public osg::Referenced
         virtual unsigned int getButtonMask() const = 0;
 
         /** time in seconds of event. */
-        virtual float time() const = 0;
+        virtual double time() const = 0;
 
 
     protected: