Mergind master into rao_branch

catalogue/Catalogue.hpp

catalogue/CatalogueTest.cpp

catalogue/OracleCatalogue.cpp

catalogue/RdbmsCatalogue.cpp

catalogue/RdbmsCatalogue.hpp

catalogue/SqliteCatalogue.cpp

common/CMakeLists.txt

common/log/DummyLogger.cpp

common/log/DummyLogger.hpp

common/log/FileLogger.cpp

common/log/FileLogger.hpp

common/log/Logger.cpp

common/log/Logger.hpp

common/log/StdoutLogger.cpp

common/log/StdoutLogger.hpp

common/log/StringLogger.cpp

common/log/StringLogger.hpp

common/log/SyslogLogger.cpp

common/log/SyslogLogger.hpp

common/threading/MutexLocker.hpp