Finit v4.7

Changes

• Silence "not available" messages for run/task/service with nowarn
• Update docs, cgroup.root workaround for SCHED_RR tasks
• Drop runlevels 0 and 6 from keventd, not needed at reboot/poweroff
• Mount /dev/shm with mode 1777 (sticky bit)
• Mount /dev/mqueue if available, inspiration from Alpine Linux
• Update Alpine Linux installer and configuration files, tested on
  Alpine v3.19, some assembly still required

Fixes

• Fix confusing warning message when tmpfiles.d fails to install symlink
• Fix tmpfiles.d legacy /run/lock/subsys, ordering
• Add missing /var/tmp and /var/lock -> /run/lock (tmpfiles.d)
• Fix #388: log redirection broken unless Finit runs in debug mode.
  Found and fixed by Ryan Rorison
• Fix #389: must libc requires libgen.h for basename() function.
  Reported and worked around with new basenm() function by Stargirl
• Fix #392: service/foo/ready condition reasserted on pidfile removal