This plugin overrides default Redmine Subversion adapter to make it use
Libsvn instead of calling svn command line client.

This plugin requires Libsvn Ruby bindings. On Debian based
distributions, they are provided by the libsvn-ruby package.

Instructions can be found on Redmine online documentation :
http:https://www.redmine.org/wiki/redmine/Plugins

Once the plugin is installed, all subversion repositories are accessed
through Libsvn bindings.