How hard is BHyVe's 16 vCPU limit, is it configurable under any circumstance?

[tinkr at openmailbox.org]

Hi!

In order justify giving energy to BHyVe, I need to know if it's 
"future-proof" in that the 16 vCPU limit can be increased?

Please let the world know if BHyVe's 16 vCPU limit can be lifted in some 
way, by configuration, patch, etc. (and if you want to, why this limit 
is in place by default today).

Thanks!!
Tinker