- YYPARSE_PARAM and YYLEX_PARAM are removed in Bison 3.0. Deprecated
  since Bison 1.875 in favor of %lex-param, %parse-param.
- %parse-param adds an argument to yyerror() as well, updated
  MYSQLerror() accordingly.
- %parse-param allows to declare proper type for argument. That's
  what 99% of this patch is about.