svn on RN202, old version

I am trying to set up a subversion repository and subversion server on my ReadyNAS 202 (R6 ARM) to use with Eclipse.

Using PuTTY to SSH into the drive, I ran

apt-get update

(to update the package list) and then

apt-get install subversion

attempting to install the latest version of Subversion. But I get the message:

subversion is already the newest version.

When I ask Subversion its version number, I get version 1.6.17, making me think this is the latest version.

svn --version
svn, version 1.6.17 (r1128011)
   compiled Apr 30 2016, 04:20:24

However, checking Apache's site, the latest version is 1.9.4.

Why does the package update and install not give me the latest version? If I want to load the latest Subversion on to the drive myself, do I just need to put svnserve and svnadmin on it (and not svn for client)? Are there restrictions on where to put these?

I tried the obvious of installing Subversion through the apps tab of the admin page of the drive, but that version says 1.6.12 (neither the most recent version, nor the one that svn --version on the command line returns). What really confused me was when I removed Subversion from the installed apps, I still had access to svn commands from the command line.

All of this has left me entirely baffled. I have looked in many places for a better understanding of installing and using Subversion on a NetGear drive and have found very little to help. If anyone can give me some pointers on installing a new version of Subversion in order to set up a repository to use with Eclipse, I would be grateful!