querierd v0.2

Changes

• Add proper /etc/querierd.conf support to change:
  • query interval (QI)
  • query response interval (QRI)
  • query last member interval
  • robustness (QRV)
  • router timeout
  • router alert
  • interface on/off with IGMP version
• Add sample querierd.conf

Fixes

• Ignore proxy querys, they must never win elections
• Query jitter problem of several seconds