[Bug fortran/92913] Add argument-mismatch check for INTERFACE for non-module procedures in the same file

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92913

--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 47483
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47483&action=edit
concept patch for subroutine vs. function

Here is a concept patch for subroutine vs. function.  I have moved
this past the interface checking because it is better that all the
symbols have been added to the global table before looking at
mismatches.