minor fix on CommandErr and CommandOk constructors.
Merge branch 'master' of https://github.com/prShadoko/IGP_POP3

Conflicts:
	src/poplib/command/CommandErr.java
	src/poplib/command/CommandOk.java
configuration for local testing
Merge branch 'master' of https://github.com/prShadoko/IGP_POP3

Conflicts:
	src/popclient/state/AuthenticatedState.java
	src/popclient/state/AuthenticationState.java
	src/popclient/state/ConnectionState.java
	src/popclient/state/QuitState.java
	src/popclient/state/SendingState.java
	src/poplib/Protocol.java
	src/poplib/service/DeliveryService.java
	src/poplib/service/impl/DeliveryServiceImpl.java
	src/popserver/service/impl/MailboxServiceImpl.java
	src/popserver/state/TransactionState.java
Reengineered CommandFactory.