[Bug bootstrap/92008] Build failure on cygwin

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92008

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Wouldn't it be better to git mv plural.y plural.y.in and depending on bison >=
3 or earlier just with sed tweak it (and in configure detect bison version, or
tweak it directly in configure)?
Use %lex-param/%parse-param in one case and YYLEX_PARAM/YYPARSE_PARAM.  Or any
other changes needed?
Having two almost identical files is a maintainance nightmare.