[Bug middle-end/116788] Relative sysroot and -save-temps don't play nicely

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116788

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|preprocessor                |middle-end

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question comes do we want to allow:

```
mkdir -p dir0/dir1
chmod 000 dir0
touch file.c

gcc -I./dir0/dir1 file.c
```

if so then we need to change around how includes from the command line vs
otherwise are handled. (similar to PR 54560 ).