[review] FreeBSD: disable ASLR to avoid conflicts in mappings

[kostikbel]

This seems to be still required?

[Douglas Katzman (dougk)]

A smaller fix might be as simple as picking a better address for static space.
We just need somewhere, anywhere below 2GB, that we can we assured that allocating about 64Kb will work.
Is that simply not possible on FreeBSD? For comparison's sake, in x86-64 Linux the OS generally gives "random" mappings a very high address, so there are actually lots of sub-2GB addresses to choose from.

[kostikbel (kostikbel-x)]

Typically that (64kB anywhere below 2G) would work. But kernel makes no guarantees that is will work always. It seems to be a rare failure mode.

[kostikbel (kostikbel-x)]

May be simplest is to run `elfctl -e +noaslr sbcl` after the linking.

[Douglas Katzman (dougk)]

applied those