New comment by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/pull/18135#issuecomment-572711765

Comment:
> That's my point, we want multi but we haven't been building it as such. (also, I see you added the options for 1.72 but not 1.69, add them for 1.69 also)

Boost is getting built with threading=multi by default, at least boost 1.69 is built with multi threading.