/usr/share/eclipse/dropins/subclipse/eclipse/plugins/org.tigris.subversion.svnclientadapter_1.6.12.jar is in eclipse-subclipse 1.10.3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/eclipse/dropins/subclipse/eclipse/plugins/../../../../../java/svnClientAdapter.jar