Clean up of headers.

src/osg/Notify.cpp

@@ -13,6 +13,7 @@
 #include <osg/Notify>
 #include <string>
 #include <iostream>
+#include <fstream>
 
 using namespace std;
 

src/osgGA/AnimationPathManipulator.cpp

@@ -1,5 +1,6 @@
 #include <osgGA/AnimationPathManipulator>
-#include <stdio.h>
+
+#include <fstream>
 
 using namespace osgGA;
 

src/osgProducer/ViewerEventHandler.cpp

@@ -5,6 +5,7 @@
 #include <osg/BlendFunc>
 
 #include <algorithm>
+#include <fstream>
 
 using namespace osgProducer;