sysutils/s6: 2.2.0.1 -> 2.2.2.0

• s6-svc supports new -wr and -wR options for blocking on restarts
• s6-svlisten1 and s6-svlisten support new -r and -R options for blocking on service restarts

PR: 203790
Submitted by: Colin Booth <colin@heliocat.net> (maintainer)