The devel/subversion port default configuraiton does not install the mod_dav_svn module needed to run subversion as a server via apache. In an effort to use only pre-built binary packages, I submit this port which will install the mod_dav_svn and mod_authz_svn modules. This makes it possible to use the base subversion package on all machines as it provides the client part, and this new port, www/mod_dav_svn, only on the server machine as an add-on to subversion. It is my belief that devel/subversion should lose the option to install mod_dav_svn itself, or if such an option is selected, to conflict with www/mod_dav_svn. I did not implement these. Having this "server" variant split out also allows other ports that depend on mod_dav_svn to have packages built, such as www/mod_authnz_crowd, which needs it. Currently this port cannot be built into a package. Once mod_dav_svn is accepted into ports, I will submit the patch I have for the crowd module to depend on it.
Solution committed.