update XSD references and use new expression support
update XSD references and use new expression support

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