serf: Adding config to control name resolution
serf: Adding an internal query handler
serf: Use internal query handler for name conflict resolution
agent: Listen for Serf shutdown
serf: Change log format
serf: Do not respond to internal ping, just ack
serf: adding name resolution tests
agent: Adding new DisableNameResolution flag
serf: Passthrough DisableNameResolution to Serf config
website: Document the disable_name_resolution config
agent: Prevent the use of the InternalQueryPrefix
agent: Add test to prevent bad query names
Merge pull request #167 from hashicorp/f-conflict

Automatic name conflict resolution
CHANGELOG updates
command/members: Re-order help
agent: Improve ForceLeave test reliability
agent: Allow special ping query
command/reachability: first pass
commands/reachability: cleanup + troubleshooting info