[Bug fortran/89240] Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables

[mark.eggleston at codethink dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89240

--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45645
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45645&action=edit
Fix return kind for max and min

Also includes update to the intrinsic documentation.