Moved FileStatus from the scheduler directory to common

common/CMakeLists.txt

common/FileStatus.cpp

common/FileStatus.hpp

common/UserIdentity.cpp

common/UserIdentity.hpp

nameserver/MockNameServer.hpp

nameserver/NameServer.hpp

objectstore/CreationLog.hpp

objectstore/UserIdentity.hpp

scheduler/AdminHost.hpp

scheduler/AdminUser.hpp

scheduler/ArchivalRoute.hpp

scheduler/CMakeLists.txt

scheduler/ConfigurationItem.hpp

scheduler/CreationLog.hpp

scheduler/FileSystemNode.cpp

scheduler/FileSystemStorageClass.cpp

scheduler/FileSystemStorageClass.hpp

scheduler/FileSystemStorageClasses.cpp

scheduler/FileSystemStorageClasses.hpp