Needs at least Ant 1.6.3. and Java 1.4.
Install Java 1.4 or higher from java.sun.com.
java is in the path (or modify the java call).
Get Ant 1.6.3 or higher from ant.apache.org.
Unpack it into a directory.
lib/jbup.jar from this Distribution into the
lib directory from Ant.
sample/* into the main Ant directory and adapt
The backup base directory must exist already.
backup.sh should start the backup and write some log information into