PCT-743: Update gocheck
Fix agent-build
Fix PCT-765: App says "Agent not connected" but agent is running.
Merge pull request #74 from percona/pct-765-agent-pong

Fix PCT-765: App says "Agent not connected" but agent is running
Bump agent.VERSION to 1.0.5.
Patch fix for PCT-765: keepalive time.Timer needs to be reset.
Remove some excessive debug statements.
Add a qan perf schema worker and interval iter.  Update factories to support both types, slowlog and perfschema.
checking connection inside loop
using locks for connection
Clean up debug statements.
Merge branch 'agent-tweaks' of github.com:percona/percona-agent into agent-tweaks

Conflicts:
	client/ws.go
Merge pull request #77 from percona/agent-tweaks

Remove some excessive debug statements
Merge branch 'release' into qan-pfs-worker
Update percona-agent/main.go with new qan factory names.
Remove qan iter running: it's vestigial, can re-implement later if needed.
Remove redundant arg from qan.MakeReport().
Test qan.ValidateConfig and require MaxWorkers >= 1.
Fix and test qan.PrepareResult().  Requires mysql-log-parser 43c98aa.
counting connected routines