Add counting of some DB queries for investigation of issue #155

ReleaseNotes.md

catalogue/Catalogue.cpp

catalogue/Catalogue.hpp

catalogue/CountGetTapesByVid.hpp

catalogue/RdbmsCatalogue.cpp

common/threading/Mutex.cpp

common/threading/Mutex.hpp

objectstore/GarbageCollector.cpp

objectstore/Helpers.cpp

objectstore/Helpers.hpp

objectstore/QueueCleanupRunner.cpp

objectstore/RetrieveRequest.cpp

objectstore/Sorter.cpp

scheduler/OStoreDB/OStoreDB.cpp

scheduler/OStoreDB/OStoreDB.hpp

scheduler/Scheduler.cpp

tapeserver/castor/tape/tapeserver/daemon/CleanerSession.cpp

tapeserver/daemon/ProcessManager.cpp

tapeserver/daemon/ProcessManager.hpp