cleanup build file, add package target
cleanup build file, add package target

cgourlay/nantcontrib,rmboggs/nantcontrib,dahmage/nantcontrib,dahmage/nantcontrib,nant/nantcontrib,dahmage/nantcontrib,rmboggs/nantcontrib,cgourlay/nantcontrib,nant/nantcontrib,cgourlay/nantcontrib,rmboggs/nantcontrib,nant/nantcontrib