TaskWatchDog is now template, can detect when the drive is stuck and ask the right report packer to report that file as wrong, close the session and kill the whole process

Removed interface classes DiskReadTaskInterface, DiskWriteTaskInterface, DiskThreadPoolInterface

Otherwise, there was a race condition between the control thread and the worker threads.
Now, the log context of the worker thread is passed and used by popAndRequestMore.

the bytes/files numbers are specified at construction time and thus no longer necessary at the call

Added a few logs in DiskReadThreadPool ans fixed some log levels into MemManager MigrationTaskInjector and
RecallMemoryManager

Renamed member variables to canonycal m_
Renamed TaskInjector->end to TaskInjector->finish() to match other threads conventions.
Fixed missing finish() in RecallTaskInjectorTest
Added missing finish() call in TapeReadTSingleThread.

added a thread logging parameter, indicating the thread involved
added startup and finish log messages for threads.

setTaskInjector, popAndRequestMore have been created and m_maxBytesReq,m_maxFilesReq have been added to be able to call TaskInjector::requestInjection

Fixed stupid new line at the end of the file for SLC5 in DiskReadThreadPool.cpp and DiskWriteTask.cpp

DiskReadThreadPool::WorkerThread::run has been changed consequently

DiskReadTask -> DiskReadTaskInterface, DiskReadFileTask -> DiskReadTask, same thing for the write side. Changed the includes files accordingly

and refactor a bit of code into the interface

We are now using the matching files and classes frpm castor/tape/threading