[Bug preprocessor/65852] Incorrect escaping in depfiles

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65852

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Paul Robinson from comment #8)
> Admittedly the gcc I have on Windows is *very* old, but it does not
> normalize \ to / before writing the depfile.

I know it is very old, I worked on it before leaving Sony :).  I did a 4.3 port
and it seemed to be working better for windows but Sony want to use this port.