[Bug cobol/119216] libgcobol support check in configure is broken

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119216

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So I guess this check has to be delayed to configure time and we can only keep
the broad target selector in configure.tgt.