Luckily mod_wsgi binaries for various Python versions can be downloaded here. The key is to know which Python version and which Visual C version to use.
For CollabNet Subversion Edge Python 2.7 and Visual C 9 work. As I'm running it on a 64-bit platform, I chose this file from the archive:
Apache24-win64-VC10\modules\mod_wsgi-py27-VC9.soThe top folder is a bit of a misnomer, because it actually contains files compiled with VC9 and VC10. But hey, it's free so who are we to complain?
Stop Apache and replace the mod_wsgi in the csvn/lib/modules folder. And you're ready to enjoy speedy python.