[Bug fortran/85839] [F2018] warn for obsolescent features

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85839

--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
>  * specific names for standard intrinsic functions

After r260705, only this one is still missing.