* server/CommListener.cpp, server/CommListener.h: Add a virtual
create method, so it can be overriden to make different kinds
of listener.
* server/Peer.cpp, server/Peer.h: New class representing connections
to peer servers.
* server/CommPeer.cpp, server/CommPeer.h: New socket class handling
sockets used to connect to peer servers.
* server/CommPeerListener.cpp, server/CommPeerListener.h: New
listener using new virtual interface in CommListener to accept
peer connections.
* server/CommClient.cpp, server/CommClient.h: Add a new constructor
for creating Atlas socket objects which are not yet open. Makes
this class suitable for establishing as well as accepting
connections. Take out call to Connection::destroy.
* server/CommRemoteClient.h: Fix error in header guards.
* server/Connection.cpp, server/Connection.h: Remove
obsolete destroy() method. Make CommClient member public.
* server/server.cpp: Add new listener for peer connections.
* common/types.h: Add enumeration for new connect operation.
* server/Admin.cpp, server/Admin.h: Add new handler for connect
operations, used by admin client to build peer connections.
* tools/cycmd.cpp: Add new command "connect" for sending
connect ops to server.
