Where are the other UV unwrap modes in 2.56?

Sorry if I had to create another thread: I’ve searched the forum, but couldn’t find what i am after.

I am searching for the old “lightmap UV pack” unwrap method.
I used it quite a lot in 2.49 and can’t find that in 2.56.
Has it been removed ?
Is it now an external script ?

The todo list http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#UV_Unwrapping

I feel bad now.
In fact I thought that 2.56 was more or less fully featured and that only bug fixing was now necessary.
Thanks Richard !