style: prefer bool to char

* src/state.h, src/state.c (state::consistent): Make it a bool.
Adjust dependencies.

src/lalr.c

@@ -329,7 +329,7 @@ state_lookahead_tokens_count (state *s, bool default_reduction_only_for_accept)
           && default_reduction_only_for_accept))
     n_lookahead_tokens += rp->num;
   else
-    s->consistent = 1;
+    s->consistent = true;
 
   return n_lookahead_tokens;
 }

src/state.c

@@ -143,7 +143,7 @@ state_new (symbol_number accessing_symbol,
   res->reductions = NULL;
   res->errs = NULL;
   res->state_list = NULL;
-  res->consistent = 0;
+  res->consistent = false;
   res->solved_conflicts = NULL;
   res->solved_conflicts_xml = NULL;
 

src/state.h

@@ -81,6 +81,8 @@
 #ifndef STATE_H_
 # define STATE_H_
 
+# include <stdbool.h>
+
 # include <bitset.h>
 
 # include "gram.h"
@@ -208,9 +210,9 @@ struct state
      store in this member a reference to the node containing each state.  */
   struct state_list *state_list;
 
-  /* If non-zero, then no lookahead sets on reduce actions are needed to
-     decide what to do in state S.  */
-  char consistent;
+  /* Whether no lookahead sets on reduce actions are needed to decide
+     what to do in state S.  */
+  bool consistent;
 
   /* If some conflicts were solved thanks to precedence/associativity,
      a human readable description of the resolution.  */