OpenBSD pch, take 2

[Florian Weimer]

* Marc Espie:

> Okay, until I find time to relocate precompiled headers, we might
> consider that they are totally broken on OpenBSD.
>
> The very nasty thing is that they will *appear* to work. Namely, loading
> a pch file will work 95% of the time... and fail whenever the file cannot
> be mmaped at the same address due to randomization issues.
> So, mark them as completely unreliable.

How do you cope with Lisp (or Java) implementations which do
essentially the same thing?  Is it just impossible to run them on
recent OpenBSD versions?