Change the prov namespace to the April 30 2013 version.

Rename object properties, and remove a few that have been consolidated:

- CLtoDestP is now controls
- sourcePtoCL is now controlledBy
- DLtoInPort is removed
- DLtoOutPort is removed
- inPortToDL is removed
- outPortToDL is removed
- hasLocation is added
- dataOnLink is removed (replaced by prov:atLocation)
- references to InputPort and OutputPort now reference Port
- isPartOf is now wasPartOf

Comment out object properties that are defined in PROV, but for some reason defined here again.  These are slated to be deleted.