fix some bugs and modificate kclustering for to_state function, new state.lus file, neigh type and fix some algo bugs

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

state with multiple field

Well, currently, it's 10 times slower (4 times using gcc -03)

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 :)