Fix ASP services to work with 3.x codebase.

[NJRoadfan]

There were some changes to server_child.h in the 3.x codebase. This updates the ASP routines to work with the newer code. Please note that this is untested until AppleTalk support is re-added into afpd.

With this PR, one can now enable AppleTalk and build main successfully.

[rdmark]

This might be a good time to turn on -Dwith-appletalk=true for the GitHub CI workflow jobs to start continuously testing the code. Do you want to make that change in this PR?

[NJRoadfan]

Added -Dwith-appletalk=true to CI actions. Several platforms are failing with weird errors. Alpine is failing on values that are coming from built in libraries.

[rdmark]

Added -Dwith-appletalk=true to CI actions. Several platforms are failing with weird errors. Alpine is failing on values that are coming from built in libraries.

Alpine and OmniOS are failing in a similar way with missing O_RDWR and similar symbols.

All of the BSDs are failing in papd with a missing WNOHANG symbol.

Off the top of my head: probably due to some missing platform or capability macro.

BTW, OpenBSD is passing just because there's a hard coded cdata.set('NO_DDP', 1) for this OS in the main meson.build. This originates with a hotfix from 2011 and should probably be removed because it is better controlled at configure time, in my opinion.

[NJRoadfan]

Looks like there are a few obsolete platform macros remaining in the 2.x code base causing the failures. The two in question are HAVE_SYS_WAIT_H and HAVE_FCNTL_H . I also ran into HAVE_ERRNO_H with the earlier commit. The 3.x codebase assumes all these headers are included, so it is likely safe to remove these macros.

[rdmark]

@NJRoadfan This looks good to me now. I think it would be cleaner to rebase this changeset into a single commit.