Added NAntContrib & NAnt merge module targets.
Added NAntContrib & NAnt merge module targets.

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