Added ValidateXmlTask
Added ValidateXmlTask

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