In my Eclipse Indigo (64-bit) under Ubuntu, the SVNKit client doesn't show up in Eclipse preferences -> Team -> SVN.
I've installed subclipse from Eclipse marketplace.
Since after installing subclipse, the SVNKit wasn't available, I installed svnkit from update site: http://eclipse.svnkit.com/1.3.x/
Still, svnkit isn't visible as a SVN client. Only JavaHL is in the combo box.
How to get SVNKit working in Indigo?
Install the SVNKit Client Adapter plugin, from the subclipse update site, in addition to installing the SVNKit plugin.