Moved the ArrayDispatchers management so that osg::State now has a ArrayDispatchers object that any osg::Geometry can reuse,

and optimized the implementation to reduce the CPU overhead.

src/osg/State.cpp

@@ -120,6 +120,7 @@ State::State():
     _maxBufferObjectPoolSize = 0;
 
     _glBeginEndAdapter.setState(this);
+    _arrayDispatchers.setState(this);
 }
 
 State::~State()