The shell script tried to close the VPN connection after having accomplished
copying data files. It still used the Juniper VPN client, which is no longer
in use. I see no reason for closing the VPN connection explicitely. For this
reason the script now leaves the tunnel open.

Let openvpn establish the connection before testing for an existing
connection.

- update syslog-ng configuration file to be applicable to syslog-ng 3.7.1
- place some notes regarding syslog service in README

A recent syslog-ng (OpenSuSE Tumpleweed, syslog-ng 3.7.1) complained because
of the strange and conflicting source definitions used here. In my opinion all
messages are simply passed internally. No need to tcp or /dev/log. Anyway, the
quickfix here makes things go well.

binary installation directory is hard-wired;
use variable name CSBACKBINDIR instead of LOCBINDIR to avoid conflicts with
Seitosh

increment operator was not working as expected

They way a list of dictionary keys were extracted apparently was not correct

improve implementation of csbucscheck.sh by
- providing proper command line reading
- providing proper usage information
- providing comments in the code
- providing additional command line options to select an output directory and
  checksum binary executable

The purpose of csbucheckcsfiles.sh is covered by the functionality of
csbucscheck.sh

Rename checksum check script.

csback_cscheck.sh
is designed to recurse into a subdirectory tree and to verify checksums
therein. It was originally created to check the LSDF archive.