2 new targets are added: tape-server_rpm and tape-server_srpm

Checking in PDF as the graphs use packages currently unavailable in SLC5.
Updated cmake/rpm to use the pre-packaged pdf.

The doc compiles with a recent TeXlive, but probably needs importation of packages to compile in SLC5/6...

The IBM media is not supported, as can be see in the current version of the make_vtl_media script. IBM was removed from system test.

Made pre-run cleanup more drastic
Synthax fix

Tape::Drive is now a container, taking care of allocating the proper type of drive depending on the device information.
Tape::DriveGeneric is the old parent class. It is now a pure virtual for lack of the non-common functions.

The tests (unit and system) have been adapated.

The system test environement now has a vide sampler of drive types (LTO from IBM and HP, 3592 from IBM in 3 flavors and T10K A, B and C from Oracle). The complete list of flavors is in usr/vtltape.c in mhvtl sources.

from SCSI level.

Added creation of 2 blocks at the begining of the tape to allow the usage of blank tapes in the system test.
Renamed the system test as it is writing to tapes.

Added a sleep because shutting down mhvtl is not instantaneous.

Simplified code with regular expression by declaring a variable later.

removed tapeGenericDeviceFile

added untitests for them.
added prelabeled picture in the doc.
cosmetic changes and fix for syntax errors.

moved all VSN1::fileds to private to not allow any direct modifications.
implemented Tape::AULFile::VOL1::verify function.
added unitest for Tape::AULFile::VOL1
added some helper functions to deal with space padded char arrays in the
 tape headers (cmpString, toString, spaceStruct).

original version at
 https://twiki.cern.ch/twiki/bin/view/FIOgroup/TapeLabelOptions

Added some fixes for DeviceVector and getTapeInfo to work on SLC6 and SLC5.
Added SLC6 unit test for getTapeAlerts.

Removed two headers prelabel example due to 

http://savannah.cern.ch/bugs/?102340

the doc.

Added tables with decriptions of the AUL related headers HDR1, HDR2, UHL1,
 EOF1, EOF2, UTL1.
Added examples with hexdumps for the headers on the mhvtl tapes.
Added exmaples for empty tapes with PRELABEL HDR1 and PRELABEL HDR1&HDR2

added \usepackage{float} to make tables less floating.

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

In the documentation I changed the name of 2 interface functions to better describe their behaviour:

spaceFilesBackwards -> spaceFileMarksBackwards
spaceFilesForward -> spaceFileMarksForward

1) Added the test for the wrapper functions of the ST driver. This test aims at checking the correctness of the behaviour of the interface functions.
2) Changed the name of 2 interface functions to better describe their behaviour:

spaceFilesBackwards -> spaceFileMarksBackwards
spaceFilesForward -> spaceFileMarksForward