create worker for bouncy castle
check missing files
add worker-backup: Store files in an archive file (zip, tar, tar.gz, tar.bz2)
task for backup ...
add classpathrefid
add sample for sql2csv
add bpdf2image, bpdfsecure
Doku ...
use pdfbox 2.0.0-RC2, add pdfnup
add type "nomain"