[m-rev.] for review: use nested lists when building the HLDS

[Zoltan Somogyi]

2021-05-17 02:42 GMT+10:00 "Zoltan Somogyi" <zoltan.somogyi at runbox.com>:
> For review by anyone.

I would like to build on this, so I intend to commit this diff this evening,
unless someone tells me they will write a review but need more time.

Zoltan.