Howdy -- I've attached a patch to TMateSoft's fork of Trilead SSH2 to http://issues.tmatesoft.com/issue/SVNKIT-178, and links to github branches with appropriate changes to jsch-agent-proxy ( https://github.com/charles-dyfis-net/jsch-agent-proxy/tree/trilead-ssh2-support) and SVNKit (https://github.com/charles-dyfis-net/svnkit/pull/1).
Prompt feedback on the Trilead SSH2 changes, in particular, would be gratefully appreciated (as these impact the jsch-agent-proxy patch, which of course is pending approval by its own upstream). I'm assuming that this branch of Trilead SSH2 is maintained internal to TMateSoft; it certainly has diverged far from the Trilead SSH2 codebase maintained by the Orion project (which, I understand, is what IDEA uses). If this assumption is incorrect, a pointer to the correct upstream would be greatly appreciated.