#6 minor correction for NOT_OPENSTEERDEMO

[Craig Reynolds]

see
http://sourceforge.net/forum/message.php?msg_id=3710476 :

The parameters for annotationLine and
annotationCircleOrDisk are wrong if NOT_OPENSTEERDEMO
is declared; the definition SHOULD be
template<class Super>
void
OpenSteer::AnnotationMixin<Super>::annotationCircleOrDisk
(const float radius, const Vec3& axis, const Vec3&
center, const Color& color, const int segments, const
bool filled, const bool in3d) const

but instead represents the Color parameter as a Vec3&
in both of them. This causes.. lots.. of fun C++
template style errors...