Android :: Strategy For Branching In Subversion With Mobile Releases

I'm developing a series of applications for mobile devices, we'll call them Orange, Cherry, and Pear. Now, because of my familiarity with Blackberry, I chose to begin implementing the first of these three applications, Orange, on the Blackberry platform. I found a way to integrate a number of Blackberry platforms (since they use relatively the same API among different BB operating systems, with some exceptions) into the same codebase. Currently, my codebase looks something like this:I thought that perhaps another thing I could do would be to create separate projects, for instance orange-blackberry and orange-android. This might clutter my svn repository, however, since we keep all of our projects in the same repository. So, inevitably, I will have orange-blackberry, orange-android, cherry-android, cherry-blackberry, pear-android, pear-blackberry, along with a series of project folders for any other application I create. So, I'm looking for some feedback about what might be the best way to manage all of this chaos. Also, if you could throw in some ideas about the logistics of transferring from my current implementation to the newer one, (i.e. what svn commands I should use to maintain history.