We should deprecate -release

[Dukc]

Walter Bright kirjoitti 13.7.2024 klo 8.35:
> The -release switch means "make the fastest code". Make it easy for the 
> journalists to do the right thing.
> 
> Nobody new to D will know to use -O -boundscheck-safeonly -inline. 
> They'll just get a "D is slow" result and move on.

Maybe we should have two release switches then. `-release-safe` and 
`-release-nochecks`, listed side-by-side in the docs. Then a reviewer 
(or an ordinary user) can hardly notice there is one without noticing 
the other.