[Bug fortran/52846] [F2008] Support submodules

[pault at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52846

--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 35779
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35779&action=edit
draft patch