PLEASE NOTE:

The XROOT plugin (CTA front end) now reads the connect details of
the catalogue database from the following configuration file:

    /etc/cta/cta_catalogue_db.conf

Installing the CTA rpms will install the following example file:

    /etc/cta/cta_catalogue_db.conf.example

This example file document the syntax of the database connect
details.

For the time being the contents of cta_catalogue_db.conf should
simple be:

    in_memory

This means the CTA front end will use an in-memory catalogue
database.

added to the interfaces the features requested by Vlado: label/lastwrite/lastread logs, encryption key and lbp tag for tapes; and encryption flag for pools

middletier, itself separated in interface, SQLite, objectstore and
shared tests.
Moved all utilities (exceptions, threading...) to a shared utility
directory.
Created a single, shared unit test from all the scattered ones.

Used exceptions while moving Vfs to creating its temporary directory using mkdtemp. This allows several Vfs intances to run on the same
system simultaneously.
Updated the model of the abstract unit test so it can instanciate one test environement per unit test. This was needed in the current
unit test for middle tier admin.

License comment is no longer filtered out by doxygen when generating web pages of the individual source files.

Some legacy utilities from castor were imported alongside, with some adaptations.