From Tree, moved GL_ #define's out of osg namespaces

include/osg/Drawable

@@ -20,15 +20,6 @@
 #include <osg/Shape>
 #include <osg/buffered_value>
 
-namespace osg {
-
-
-class Vec2f;
-class Vec3f;
-class Vec4f;
-class UByte4;
-class Geometry;
-
 #ifndef GL_ARB_vertex_buffer_object
 
     // for compatibility with gl.h headers that don't support VBO,
@@ -98,6 +89,16 @@ class Geometry;
 
 #endif
 
+
+namespace osg {
+
+
+class Vec2f;
+class Vec3f;
+class Vec4f;
+class UByte4;
+class Geometry;
+
 // this is defined to alter the way display lists are compiled inside the
 // the draw method, it has been found that the NVidia drivers fail completely
 // to optimize COMPILE_AND_EXECUTE in fact make it go slower than for no display