Created archive reporter classes and refactored Xroot exception thrower.

CMakeLists.txt

common/CMakeLists.txt

common/exception/XrootCl.cpp

common/exception/XrootCl.hpp

disk/CMakeLists.txt

disk/DiskReporter.cpp

disk/DiskReporter.hpp

disk/DiskReporterFactory.cpp

disk/DiskReporterFactory.hpp

disk/EOSReporter.cpp

disk/EOSReporter.hpp

disk/NullReporter.hpp

scheduler/ArchiveJob.cpp

tapeserver/castor/tape/tapeserver/file/CMakeLists.txt

...r/castor/tape/tapeserver/file/DiskFileImplementations.hpp