MFH: r413935

• Fixes in {agent,proxy,server} rc start scripts:
  • SysV IPC leak
  • Restart race
  • Allow to specify a custom PATH in rc.conf
• Bump PORTREVISION

PR: 207896
Submitted by: kbowling
Approved by: maintainer
Sponsored by: Essen Linuxhotel Hackathon 2016

Approved by: portmgr (bapt)