[Geneticd-devel] Added named agents

[Jonny M. <jon...@ni...>]

Now agents can be named. The name of agents can be a simbolic reference "eg. 
eddie". Agents "complete" name is formed by the "family" name (again, 
"eddie") a minus sign and generation id, starting from 0. The father has id 
"eddie-0", it's childs have ids "eddie-1", etc.
An agent can be referenced by full name or by numeric id (the position in the 
population) in all commands referencing agents.
Eg:
	dage 0 eddie-0 
	or
	dage 0 14  (eddie-0 it's the 14th agent).

Name of agents can be dinamically changed with the command nage:
   nage <eng-id> <agent-id>  - displays the agent's full name
   nage <eng-id> <agent-id> <name> - changes family name; generation will be 0

This change is meant for human readers that wish to follow the destiny of a 
particular agent. Software client can still safely reference agents with 
their position in the population.