* src/reader.h, src/reader.c (gram_error): ... can't get

yycontrol without making too strong assumptions on the parser
itself.
* src/output.c (prepare_tokens): Use the real 0th value of
token_translations instead of `0'.
* src/parse-gram.y (yyerror): Don't rely on yycontrol being
visible here.
* data/yacc.c (yyreport_parse_error): Rename yylocation as yylloc
for the time being: %locations ought to provide it to yyerror.

src/output.c

@@ -305,8 +305,9 @@ static void
 prepare_tokens (void)
 {
   muscle_insert_symbol_number_table ("translate",
-				    token_translations,
-				    0, 1, max_user_token_number + 1);
+				     token_translations,
+				     token_translations[0],
+				     1, max_user_token_number + 1);
 
   {
     int i;