fixed bugs related to `yyerror` stripping/inclusion in the generated kernels and stripping multiline `yydebug` statements in the generated DEBUG kernels.
fixed bugs related to `yyerror` stripping/inclusion in the generated kernels and stripping multiline `yydebug` statements in the generated DEBUG kernels.

GerHobbelt/jison,GerHobbelt/jison,GerHobbelt/jison,GerHobbelt/jison