[Bug fortran/68560] [6 Regression] The test gfortran.dg/shape_8.f90 now fails when compiled with -flto

[mikael at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68560

--- Comment #8 from Mikael Morin <mikael at gcc dot gnu.org> ---
Created attachment 36902
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36902&action=edit
Make the intrinsic procedure declarations less context-dependant

I can't test this right now (bootstrap broken).

It basically unconditionally clears the ignore_optional flag (and removes it).
So that optional arguments are always passed.