Update ASN.1 grammar for newer Bison versions.
* src/asn1-parse.y (YYERROR_VERBOSE): Replace by ... (%define parse.error.verbose): this. (YYPARSE_PARM, YYLEX_PARM): Replace by ... (%parm): this. (%pure_parser): Replace by ... (%define api.pure full): this. (yyerror): Add arg parm.
- Signed-off-by: Werner Koch <wk@gnupg.org>