Have added a #define USE_DEPRECATED_API to include/osg/Export, and

various
osg header and source files to optional compile in deprecated parts of
the
OSG API.

Have renamed osg::Transparency osg::BlendFunc to bring it in line with
the
rest of the OSG's StateAttribute classes which are named after their
OpenGL counterparts.  include/osg/Transparency still exists and is
simply
a typedef to BlendFunc and is enclosed in a #ifdef USE_DEPRECTATED_API
block.

The matrix methods in the osg::Transform class have been
moved/replicated in
a osg::MatrixTransform sublcass from osg::Transform.  The old matrix
functionality is still present in the osg::Transform class but is guard
by #ifdef USG_DEPRECATED_API blocks.  One should now think of
osg::Transform
as being a Transform Node base class.  MatrixTransform has all the
functionality of the original Transform class, so should be used
instead.

include/osg/BoundingBox

@@ -50,8 +50,10 @@ class SG_EXPORT BoundingBox
             _max.set(-FLT_MAX,-FLT_MAX,-FLT_MAX);
         }
         
+#ifdef USE_DEPRECATED_API
         /** deprecated, use valid() instead.*/
         inline const bool isValid() const { return _max.x()>=_min.x(); }
+#endif
                 
         inline const bool valid() const
         {