On the javahl-1.8-extensions branch:
Make the JavaHL backport source-compatible with trunk.

[in subversion/bindings/javahl]
* src/org/apache/subversion/javahl/ISVNClient.java
  (ISVNClient.setTunnelAgent): New method.
* src/org/apache/subversion/javahl/SVNClient.java
  (ISVNClient.setTunnelAgent): Implement; always throws exception.
* src/org/apache/subversion/javahl/remote/RemoteFactory.java
  (RemoteFactory.RemoteFactory): Accept a tunnelAgent parameeter,
   but throw an exception if it's not null.
  (RemoteFactory. setTunnelAgent): New method; always throws exception.

* tests/org/apache/subversion/javahl/SVNRemoteTests.java
  (SVNRemoteTests.testGetSession_ConfigConstructor,
   SVNRemoteTests.testSessionGC,
   SVNRemoteTests.testConfigHandler): Update RemoteSession construction.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/javahl-1.8-extensions@1543995 13f79535-47bb-0310-9956-ffa450edef68