Could you add SSL support too? zerowing.idsoftware.com only supports svn over https.
It's added by recompiling neon with --with-ssl (yeah, no autodetection) and then svn (since neon is a static lib).
Seems there's a new version as well, 1.5.5.
PS: This is a really great side of TC. I need svn, cvs, git, OO.o etc really rarely. Here I can use them when needed, and get rid of them taking ram afterwards. Modularity FTW