Merge remote branch 'origin/master'

CMakeLists.txt

libs/client/CMakeLists.txt

libs/client/ClientAPI.hpp

libs/client/DirectoryEntry.cpp

libs/client/DirectoryEntry.hpp

libs/client/DirectoryIterator.cpp

libs/client/DirectoryIterator.hpp

libs/client/FileAttribute.cpp

libs/client/FileAttribute.hpp

libs/client/MockAPITest.cpp

libs/client/MockClientAPI.cpp

libs/client/MockClientAPI.hpp

libs/client/MockClientAPITest.cpp

libs/client/StorageClassList.hpp

libs/client/UserIdentity.cpp

libs/client/UserIdentity.hpp

objectstore/RecallJob.hpp

tests/CMakeLists.txt

tests/unit_tests.cpp

xroot_clients/CTACmd.cpp