I have no idea, if this is the right way to do it, so please don't kill me, if it's not.
SEJCR seems not very active the last months and JCR 2.0 Support is requested by some users. Maybe I can support you to 'reactivate' this extension project. I invested some hours to put the current state of the sejcr-code into a git repository, wich will be attached as a zip to this comment.
It contains the state of trunk when imported to the git repository (some days ago) in the master branch and a branch called 1.0.x (1.0.0.RELEASE does not exist, maybe this branch can be used for 1.0.x development). The tag 0.9 from 'tags/releases/' of svn repository. Further it contains a branch called 'develop'. This branch is an updated version of se-jcr. All dependencies are updated to their latest releases. JackRabbit (2.3.4), Spring (3.1.0.RCx), javax.jcr (2.0), SLF4J (1.6.4), JTA (1.1). Unused dependencies are removed. I replaced many deprecated api-usages with the recommended. I added some additional Testcases to reflect and test updated JCR-API such as using 'LockManager' instead of 'Session.lock(...)'. FactoryBeans are updated to use generics. And many minor cleaning. All Tests are 'green'.
It would be good for this extension if it would be moved to Git (GitHub, where all other SpringSource-projects are based now, of if it is not 'cool enough' for GitHub to Gitorious (git.springsource.org).
I will invest more time in se-jcr and jcr in general if this could be made possible and there will be some guidance from SpringSource.
(Sorry for my english)