[bug #52849] mdoc(7) .Lk: complete rewrite of the macro

Update of bug #52849 (project groff): Status: In Progress => Fixed Open/Closed:Open => Closed Planned Release:None => 1.22.4

[bug #52865] lib-driver, input: Df broken (since 2002)

Follow-up Comment #3, bug #52865 (project groff): I thought looking at parse_D_command() unveils the obvious. But, to continue the discussion:, what prevented disabling of STUPID_DRAWING_POSITIONING after it has been introduced a few weeks before those bugs sprang into existence (in [ea5a42d0] any