Since not everyone here is familiar with yum, here's how I did it:

1. I checked to see if there was a CentOS update that got missed somehow: yum list updates subversion
2. Nope. Okay, next was to check to see if RPMForge had something newer: yum --enablerepos=rpmforge list subversion
3. Yup, that found a newer version than what CentOS had -- the 1.2 Paul was looking for. Okay, so after checking with Paul (and making sure no one else was logged in), I ran the update: yum --enablerepos=rpmforge update subversion

And that was about it.