Also, packaged the python scripts in the same cta-migration RPM.
The scripts are still WIP.

Add standalone command line tool cta-tape-label.

Command mount, label, umount the tape pointed by VID option. Tape drive
and library parameters used from /etc/cta/TPCONFIG file and catalogue
parameters from /etc/cta/cta-catalogue.conf.
To be labelled the tape must be present in the catalogue and must be
empty.
By default the tool labels the tape with enabled logical block protection
if drive supports such mode. For non-blank tapes command checks previous tape
label and label only if the old label is the same or match to the label in the
command line oldLabel option. To skip label checks for non-blank tapes --force
option could be used.

containing: eos-import-dirs

And renames tool to cta-upgrade-db in line with other tools

Moved disk-operations-related code into the new "disk" directory

This reverts commit 5e55c15f.

Conflicts:
	mediachanger/acs/AcsTest.cpp
	mediachanger/acs/CMakeLists.txt
	tests/CMakeLists.txt

Temporarily removed dependency of cta-tape-developer-acs-tools on cta-lib so that cta-tape-developer-acs-tools can be installed on CASTOR tape servers