Webapp integration: restructuring folders in jforum

I'm working on deploying jforum into an existing website - creating an SSO and using SiteMesh to provide common look and feel without needing to change templates in Jforum. I've decided against trying to run jforum in its own context independently of the main app (because I'd like the main app to be able to make calls into jforum).

However, to make it a bit easier to merge Jforum into this existing web application, I'd prefer to restructure the folders. I know I can set template.dir but that just specifies the sub-folder insider <webapp>/templates and I'd prefer to move template, tmp, cache etc into WEB-INF/jforum/<folder-name>.

I don't think this is possible without me changing code. Can anyone confirm?

Thanks
James.
[originally posted on jforum.net by JamesR]