Accept agent connections from multiple IP addresses.
Zorka (local) log messages don't count as traps in ZorkaDiagnostics counters.
Use ZorkaConfig.xxxCfg() methods in AgentInstance and AbstractTcpAgent.
FIX: UtilizationMetric not readable by zorka viewer.
Additional metrics: zorka stats count, symbol count.
Log script loading messages as INFO, not DEBUG.