Chore: more paths to sources in the .merlin

.merlin

 S src
 S lib/sasacore
+S lib/sasa
 S lib/algo
+S ../rdbg/lib
+S ../rdbg/bin
+S ../lutils/bin
+S ../lutils/lib
+S ../lutin/lib/lutin
+S ../lutin/lib/bddand
+S ../lutin/lib/ezdl
+S ../lutin/lib/polka
+S ../lutin/bin
 
-B /home/jahier/.opam/4.07.0/lib/ocaml
-B /home/jahier/.opam/4.07.0/lib/ocamlgraph
+
+
+
+B $OPAM_SWITCH_PREFIX/lib/ocaml
+B $OPAM_SWITCH_PREFIX/lib/ocamlgraph
 B _build/default/src/.sasaMain.eobjs
 B _build/default/lib/algo/.algo.objs
 B _build/default/lib/sasacore/.sascore.objs