[C++] Deprecating -fno-for-scope for 3.5.0

[Stephan T. Lavavej]

[Andrew Pinski]
> I think it is time to remove it, people had a large amount of
> time to fix their code. This option has been here since 2.7.1
> which was back in 1995 so almost ten years.

By Stroustrup's beard, that flag must die.

Any chance of deprecating it in 3.4.1 and nuclearating it outright in
3.5.0/4.0.0?  Please?

Stephan T. Lavavej
http://nuwen.net