* src/gram.h, src/gram.c (symbols): New, similar to state_table

and rule_table.
* src/reader.c (packsymbols): Fill this table.
Drop sprec.
* src/conflicts.c (resolve_sr_conflict): Adjust.
* src/reduce.c (reduce_grammar): Adjust: just sort symbols, a
single table.
Use symbols[i]->tag instead of tags[i].

src/gram.h

@@ -133,6 +133,9 @@ typedef struct rule_s
 
 extern struct rule_s *rule_table;
 
+/* Table of the symbols, indexed by the symbol number. */
+extern struct bucket **symbols;
+
 /* token translation table: indexed by a token number as returned by
    the user's yylex routine, it yields the internal token number used
    by the parser and throughout bison.  */