Renamed CTA/tapeserver/castor to CTA/tapeserver/castor_checkout in preparation for the moving the sub-directory CTA/tapeserver/castor/castor up the directory tree

This reverts commit 97bd05cb.

This reverts commit 10b8297d.

with new IBM drives.

CASTOR start with lower case letters.

- Fixed missing allocationLength in INQUIRY commands
- Fixed misnamed struct member (typo)
- Introduced setU32 utility function to replace fromLtoB32 (retired)
- Replaced usage of ad-hoc structures with the automatically set classes
(SCSI::Structures::LinuxSGIO_t, SCSI::Structures::senseData_t).

This in particular includes fixing the remaining strict-aliasing issues.

Fixed inheritance from std::exception (const correctness of what()). This required declaring m_what mutable.
Created a multithreaded unit test.
Created an automatic exception thrower for unhandled errors.
Ported from previous proof of concept the threading primitves and made them production level (with error checking).
Added unit tests for threading primitives.

Lowercased/Upercased some namespace/class names for homogeneity.

Removed the now duplicated backtrace and adapted the code where needed.

Removed the author list from every file and added the complete list into a single file.

child function getSerialNumber was added.

Moved definition of compiler flags so they become active. This fixes the lack of debug info in SLC6.
Fixed superflous semicolon detected by -pedantic
Fixed sign correctness in various places.
Removed the use of LL suffix in 64 bits contants (they are not required).
Some documentation clarifications.

We use MODE SENSE(6) to query the tape information and then MODE SELECT(6)
to set parameters which we only change.

By default we only enable compression.

Added an exception launcher function to prevent repetive tests.
Clarified the error/exception handling strategy in the manual.

pretty print the meaning of the ACS/ACSQ couple.

We use READ POSTION command with data replay in SHORT FORM.

Tested with mhvtl.

We use LOCATE(10) CDB as CASTOR does.
Here we need castor.conf LOCATE_TIMEOUT environment (*to be implemented*)

Tested with mhvtl.

Added senseData structure, which is polymorphic, and added unit test.

Changed all the char arrays used as storage to SCSI number into unsigned char[] (we were in a mixed situation).
Added unit test for the recently created structures.
Replaced shift and or with toU16 in log select unit test.
Added reference to st man page and txt file in documentation.
Changed signature of getTapeError.

Turned the inquiryCDB struct into a class, with auto setting of the opcode (which is always the same) and adapted the usage.

Added stack trace support for exceptions (with C++ name demandling).
Added more anaysis of the past code in documentation.

Added a few conversion utility functions for handling the strings from devices, and the 
big endianness of SCSI. Added a test to validate both.
Added a dump for all fields of the tape drive's inquery response.