Add neigh type (struct composed of state, reply and weight), add 3 new function for neigh type, add state.lus generation by salut, modificate unison,bfs-spanning-tree and rsp-tree (compare and kind2 work\!), add demon_is_valid function, a new constant (liste of neighbors number), modificate algo for the new to_state function

nb: to use it
 lv6 lv6 dice5.lus -n dice5 -2c
 sh dice5.sh
 rdbgui4sasa -sut "./dice5.exec"

nb: requires
  - an up-to-data rdbg (available via git and opam)
  - an up-to-data sasa (git only)
enjoy :)

Indeed, the silent value was missing, which was blocking luciole

nb: I needed to  split Main to avoid a Module self-loop  (as I need to
use do_step in Daemon).

To force that, I've changed the Register interface (and thus GenRegister)

The rationale is that:
- in lurette mode, they should be the same for all algos already
- in batch mode, action declarations are ignored anyway (except in custom mode)

also, use (back) the odoc make rule now the image has been updated