I don't understand your objection to checking compiled modules into svn. Are you concerned that separate projects in the same repository might put in the same module? So what? We're talking about a few cents worth of hard disk here.

There are other solutions of course. For the Krang CMS project, we check in the module source and build it at install time. This is a good solution when you need to support multiple platforms. You're welcome to steal any code you find useful there.