error: rename the error token from YYERRCODE to YYerror

See https://lists.gnu.org/r/bison-patches/2020-04/msg00162.html.

* data/skeletons/bison.m4, data/skeletons/c.m4, data/skeletons/glr.cc,
* data/skeletons/lalr1.java, doc/bison.texi,
* examples/c/bistromathic/parse.y, src/scan-gram.l, src/symtab.c
(YYERRCODE): Rename as...
(YYerror): this.
Adjust dependencies.

2 files changed, 2 insertions, 2 deletions

diff --git a/examples/c/bistromathic/bistromathic.test b/examples/c/bistromathic/bistromathic.test
index 9a5b6d11..1e5bd0e1 100755
--- a/examples/c/bistromathic/bistromathic.test
+++ b/examples/c/bistromathic/bistromathic.test
@@ -118,7 +118,7 @@ run 0 '> 100% + 10
 err: 1.4: syntax error: invalid character: %'
 
 # Traces.  This allows to check the location of the error.  If we
-# forget to map YYERRCODE to YYUNDEF, error recovery enters an endless
+# forget to map YYerror to YYUNDEF, error recovery enters an endless
 # loop with this input.
 cat >input <<EOF
 (+_)
diff --git a/examples/c/bistromathic/parse.y b/examples/c/bistromathic/parse.y
index 042c5616..925e06f5 100644
--- a/examples/c/bistromathic/parse.y
+++ b/examples/c/bistromathic/parse.y
@@ -300,7 +300,7 @@ yylex (const char **line, YYSTYPE *yylval, YYLTYPE *yylloc)
       // Stray characters.
     default:
       yyerror (yylloc, "syntax error: invalid character: %c", c);
-      return TOK_YYERRCODE;
+      return TOK_YYerror;
     }
 }