update Xcode projects for built-in block samples

AV Foundation and Core Media are of course needed in these samples as well and they all deserve the settings validation and cleanup that the Cinder project samples get.

The TUIO project was in an undead state, regardless to the AV Foundation, I think because the deployment target was set to 10.6, but it definitely wasn't in good shape.
update CocoaView Xcode project template

AV Foundation and Core Media are needed here and the other project cleanups are made as well.