Backport PR #22757: BPF error logging improvements

New release for v250
Sync latest changes from Fedora rawhide
Use source archives from https://pagure.io/centos-sig-hyperscale/systemd
Added llvm-toolset to BuildRequires (for llvm-strip) to make build succeed
Enable p11kit and pwquality options in the systemd build

Avoid trying to create the symlink if there's a dangling symlink already in

Move to dist-git layout used by Fedora (no more SOURCES/ and SPECS/)
Switch to .gitignore from commit 46a40810 from the Fedora RPM repo
Add back removed files from commit 46a40810 from the Fedora RPM repo

Move part of %post scriptlet for resolved to %posttrans (#2018913)
Specify owner of utmp/wtmp/btmp/lastlog as root in the rpm listing

Drop scriptlet for handling nobody user upgrades from Fedora <28
Specify owner of /var/log/journal as root in the rpm listing (#2018913)

Add pam_namespace to systemd-user pam config (rhbz#2053098)
Drop 20-grubby.install plugin for kernel-install (rhbz#2033646)

Backport PR #20695: Sync if_arp.h with Linux 5.14
FB-only backport PR #22426: MemoryZSwapMax= to configure memory.zswap.max

Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild

Take ghost ownership of /var/log/lastlog (#1798685)

Third stable release after v250: fixes for sd-boot on fringe hardware (e.g. VirtualBox),
journal file verification is now stricter,
networkd by default will not add routes for wireguard AllowedIPs=
Don't do sd-boot updates when not installed (#2038289)
xdg-autostart-service will ignore ExecCondition= when the helper binary is missing
kernel-install does cleanup better (#2016630)

Second stable release after v250: various bugfixes
resolved, systemd-journald, userdbctl, homed).
The manager should now gracefully handle the case where BPF LSM
kernel-install now checks paths used by grub2 before sd-boot paths again
fstab-generator now ignores root-on-nfs/cifs/iscsi and live (#2037233)
CVE-2021-3997, #2024639: systemd-tmpfiles would exhaust the stack and crash

First stable version after v250: various bugfixes, in particular for
boot, systemd-networkd, and various build issues.
Fixes #2036517, #2035608, #2036217.

Disable bpf filters on arm64 (#2036145)

Fix warning about systemd-boot-update.service not existing on
uefi architectures
Enable all bpf features (#2035608)

Version 250, only some very small changes since -rc3.
Switch unit status name format to 'combined' (#2028169)