Changes for branch openafs-stable-1_8_x.

numbersubjecttopic
14880tests: Accommodate c-tap-harness 4.7
14879Import of code from c-tap-harness
14878Add sysname, files and header entries for FreeBSD 12.3fbsd
14815rx: Remove delays in multi_End_Ignore
14814fs: Avoid unnecessary cell DNS lookups
14813afs: clarify cold and warm shutdown logic
14810Make OpenAFS 1.8.9pre1
14594warn when starting without keys