Instalación Plugin SVN en Eclipse IBM Webphere Toolkit

Ingresar a Help - Install New Software - y dar clic en agregar, luego agregar la siguiente ruta, que fue obtenida de la página de  http://eclipse.org/subversive/latest-releases.php

Latest Stable Build

This is the most up-to-date version of the Subversive plug-in. It's aimed to provide you with access to the latest Subversive features before they become available in the Subversive build included into the yearly Eclipse Simultaneous Release.

Release Date: 23 January 2015
Version: 2.0.4.I20150123-1700 (Change log)

Update Site:
http://download.eclipse.org/technology/subversive/2.0/update-site/

ref
https://eclipse.org/subversive/documentation/gettingStarted/aboutSubversive/install.php