pv-wrap-home: Share the remaining FHS top-level directories
Depends on !481 (merged). Only look at the last commit when reviewing.
There's no particular reason not to share /home, /opt and /srv, and they are sometimes used to contain mount points for non-removable, non-system partitions.
Resolves: #18 (closed)
Helps: steamrt/tasks#149
Helps: https://github.com/ValveSoftware/steam-runtime/issues/334
Helps: https://github.com/ValveSoftware/Proton/issues/5102
Edited by Simon McVittie