Added castor::mediachanger::MediaChangerFacade

castor/legacymsg/RmcProxy.hpp

castor/legacymsg/RmcProxyTcpIp.hpp

castor/mediachanger/CMakeLists.txt

castor/mediachanger/MediaChangerFacade.cpp

castor/mediachanger/MediaChangerFacade.hpp

castor/mediachanger/MediaChangerFacadeTest.cpp

castor/mediachanger/MediaChangerProxy.hpp

castor/mediachanger/TapeLibrarySlot.cpp

castor/mediachanger/TapeLibrarySlot.hpp

castor/mediachanger/TapeLibrarySlotTest.cpp

castor/tape/rmc/MountCmd.cpp

castor/tape/rmc/castor-tape-mount.man

castor/tape/tapeserver/daemon/DataTransferSessionTest.cpp

rmc/rmc_mnt.man

rmc/rmc_unmnt.man

tape/taped.man

test/CMakeLists.txt

test/unittest/rmc/RmcLibTest.cpp