changed the main rendered_polygon_::set_data to take an array and length (may change to a array_view later) and an overload for vector<VertexType>. Also polygon no longer sets/overwrites the vbo's usage to GL_STATIC_DRAW in set_data()
changed the main rendered_polygon_::set_data to take an array and length (may change to a array_view later) and an overload for vector<VertexType>. Also polygon no longer sets/overwrites the vbo's usage to GL_STATIC_DRAW in set_data()

mflagel/asdf_multiplat,mflagel/asdf_multiplat,mflagel/asdf_multiplat