Pass --absolute-names switch to tar

Changes:

1. Pass --absolute-names switch to tar.

2. echo the tar command that is run to stdout.

3. Another minor change.

Originally this code was in the file
/home/kdokoli/Dokumenty/fanda/after-2014-03-16/after-2014-07-03/1.unsorted/15.backup-script-tar-bz2.8.sh

 # On branch record-original-older-untracked-files
 # Your branch is up-to-date with 'origin/record-original-older-untracked-files'.
 #
 # Changes to be committed:
 #	modified:   backup-script-tar-bz2.sh
 #