[Bug testsuite/116163] RFE: add a linting tool for DejaGnu tests

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116163

--- Comment #14 from Sam James <sjames at gcc dot gnu.org> ---
* Tests in lto/ directories not using _N suffix per README will be ignored
* Tests in lto/ directories using dg-do, dg-options instead of
dg-lto-{do,options}