So today I went ot update an SVN repository which was using version 1.8.13. Unfortunatly Apple did not see fit that it updated the svn version in the distrobution. So I tried to do the same thing I did in the past and remove the installed svn version and update it via the version I had installed in /opt/local/bin.
Again, I found this a furitile task as Admin permissions is not enough to alther the usr/bin contents.
So to fix this issue I changed the PATH to include /opt/local/bin as the first path and that worked.
The command:
export PATH="/opt/local/bin:$PATH"