Merge remote branch 'origin/master'

libs/client/CMakeLists.txt

libs/client/ClientAPI.cpp

libs/client/ClientAPI.hpp

libs/client/FileAttribute.cpp

libs/client/FileAttribute.hpp

libs/client/MockAPITest.cpp

libs/client/MockClientAPI.cpp

libs/client/MockClientAPI.hpp

xroot_clients/CTACmd.cpp

xroot_plugins/CMakeLists.txt

xroot_plugins/ParsedChangeStorageClassCmdLine.cpp

xroot_plugins/ParsedChangeStorageClassCmdLine.hpp

xroot_plugins/ParsedCreateStorageClassCmdLine.cpp

xroot_plugins/ParsedCreateStorageClassCmdLine.hpp

xroot_plugins/ParsedDeleteStorageClassCmdLine.cpp

xroot_plugins/ParsedDeleteStorageClassCmdLine.hpp

xroot_plugins/ParsedMkdirCmdLine.cpp

xroot_plugins/ParsedMkdirCmdLine.hpp

xroot_plugins/ParsedRmdirCmdLine.cpp

xroot_plugins/ParsedRmdirCmdLine.hpp