Added first (incomplete) version a retrieval test.

common/ArchiveFileStatus.cpp

common/ArchiveFileStatus.hpp

common/CMakeLists.txt

common/DirEntry.hpp

common/RemotePath.cpp

common/RemotePath.hpp

common/RemotePathTest.cpp

common/SmartFdTest.cpp

common/Timer.cpp

common/Timer.hpp

nameserver/NameServer.hpp

remotens/CMakeLists.txt

remotens/MockRemoteNS.cpp

remotens/MockRemoteNS.hpp

remotens/RemoteNS.hpp

remotens/RemoteNSDispatcher.cpp

remotens/RemoteNSDispatcher.hpp

remotens/RemoteNSDispatcherTest.cpp

scheduler/Scheduler.hpp

scheduler/SchedulerTest.cpp