Update imsg from libutils via OpenBSD. Needed for some imsg->fd handling.

also improves the error message in case of no fd was passed. ok stsp@

The session process opened an object as part of a sanity check and simply closed it again. Opening an object involves decompression and combination of deltas. Add a new interface which checks whether an object ID exists without such overhead and call it from gotd.

tweaks and ok stsp

Unlike max_repos_display which limits the number of items per page, max_repos is an hard-limit on the number of repos gotwebd would process. "kill it with fire" tracey@ about the idea ok stsp

Show the default value for each setting where it is documented and so trim the EXAMPLES section down to bits that are actually understandable. While here, some minor tweaks like fixing the syntax in one example, s/IP4/IPv4 and s/FCGI TCP/FastCGI. ok and tweaks stsp@

ok jamsek

The page querystring parameter is long gone and currently unused. It was replaced mith the "more" buttons in all the views, except INDEX that uses `index_page'. ok jamsek

with tweaks from + ok op@

Reported by Matthias Schmidt ok tb@

As reported by op, we fail to close a tmp file in some diff failure case. Also spotted by op and stsp, set FILE pointer to NULL after fclose(3) failure so we no longer attempt to access the stream or close it again in close_diff_view(). fix plus ok op@ and stsp@

Since it appends to the given stailq, the ownership is moved and so don't initialize/reset it at the start and neither on error. The caller has to take care of the contents. (kind of) follow up to 2234939fb4. Based upon an original diff from jamsek; ok jamsek

We need to free the matched object id queue on each pack index iteration--not only when the objects/pack dir modification time has changed--otherwise the ids are leaked when we reinitialise the queue in got_packidx_match_id_str_prefix(). tweaked by + ok op@

tweaked by + ok op@

Needs doas to elevate privileges. ok stsp@

I feel safer by using the explicit size of the table rather than an hypothetical maximum value given by the enum. Mostly because in the past I edited a table and forgot to remove the corresponding enum value. ok stsp@