CVSClient is being built

CVSClient is a javacvs client for Colimas without UI. I compared eclipse cvs client, jCVS and netbean cvs client, and decided to use netbean cvs client as the core of Colimas cvs component.
Because the netbean does not support ext, extssh well, CVSClient only supports "pserver" util now. Now CVSCheckout is commited into Colimas CVS. The module name is CVSClient.