fixing general makefile

Makefile

-all: ucb_etat_de_l_art ucb_categorie exploration_graph
-
-initialize_RMB_LMB:
+all :
 	$(MAKE) -C initialize_RMB_LMB
-
-ucb_etat_de_l_art: initialize_RMB_LMB
+	$(MAKE) -C cache_block_id
 	$(MAKE) -C UCB_local
-
-ucb_categorie: cache_block_id
 	$(MAKE) -C ucb_otawa
-
-cache_block_id:
-	$(MAKE) -C cache_block_id
-
-exploration_graph:
 	$(MAKE) -C explo
+