Remove all uses of deprecated site APIs

[arthurp]

Orc has collected a number of external site APIs. We should clean that up. The APIs are currently marked as @depricated so it should be easy to find their uses. This issue tracks the clean up for the extremely old Java API.

The APIs are:

• orc.values.sites.compatibility.Args
• orc.values.sites.compatibility.DotSite
• orc.values.sites.compatibility.PartialSite
• orc.values.sites.compatibility.SiteAdapter
• orc.values.sites.compatibility.Types

To remove all uses of these we will likely have to remove all the legacy Java sites. This would be a good time to rewrite them using the invoker API.

[arthurp]

Note: The new Invoker and Accessor APIs should actually be easier to use from Java than the Site API, since all the uses of Scala collections and specialized types have been removed. The only types in the API are AnyRef and Array[AnyRef]. Which are also easy to write in Java as Object and Object[].

[arthurp]

This now includes the Scala compatibility APIs in orc.values.sites.compatibility.