[Yanl-develop] array support

[Karsten A. <kar...@gm...>]

Hello everybody,

have a look in euler.hpp. We have added std::tr1::array support for the
euler class. Two points:

1. we should go back to iterators in the the derivative function,
because the iterators of array are usually pointers.
2. I don't know how we can specialize the resize_container class for
arrays. Maybe somebody knows how it works. Then we can avoid the
explicit declaration of the array resizer, as in lorenz_array.cpp

Bye,

Karsten