Bug#1115317: advice for using /var/lock (which is a link to /run/lock) (#1110981)

Hello Systemd maintainers,

The fallout from #1110980 has reached the technical committee, where the 
changes to /run/lock permissions is causing problems for software that 
uses it for lock files per FHS.

I see from the upstream issue both that some of systemd upstream 
consider FHS obsolete; but they do also envisage that distributions that 
want to keep /run/lock FHS-compliant could choose to do so downstream of 
systemd.

It seems to me that Debian Policy requires FHS compliance in this 
regard; would you be amenable to reverting this change in systemd (to 
make it policy-compliant again) at least until we can come up with a 
transition plan, please?

I think in any case #1110980 should be reopened at severity serious 
until this is resolved - any objections?

Thanks,

Matthew