8039253: Remove undocumented com.oracle.net

[Alan Bateman]

As part of our long standing effort to prepare the platform for modules 
then we need to go through the various JDK-specific APIs and see which 
APIs are really "exported", supported, documented, etc.

One odd one is com.oracle.net and I'd like to propose that we remove it. 
The build doesn't generate its javadoc and to my knowledge it has never 
been documented or supported. I'm not aware of any applications or 3rd 
party libraries using it. Note that removing this API does not 
disruptive the SDP support in the JDK as this does not use this API. 
Further down the road then if the JDK really needs an API to explicitly 
create SDP Sockets then it would be more appropriate to create a new 
jdk.net API for this (or alternatively come up with factory or other 
means to do this).

The webrev with the proposed changes is here:

http://cr.openjdk.java.net/~alanb/8039253/webrev/

I will leave it for a few days before doing anything on this.

-Alan.