The License information on the Subversion package indicates a "Subversion" license, as well as "GPL-2".
Following the "Subversion" license leads me here:
This file is clearly wrong, as it is the copyright applied to the code prior to migration to the Apache foundation (and last updated over a decade ago).
Downloading the source distribution to Subversion (https://subversion.apache.org/download.cgi), the LICENSE file indicates a bunch Apache 2, BSD 3-clause and other licenses, but no GPL v2.
Steps to Reproduce:
Download the source for Subversion.
Inspect the LICENSE file. For completeness, you can also look at the "NOTICE" file.
License information contained in LICENSE file bears no resemblance to the license information captured by Gentoo's packaging of Subversion.
Expect no GPL2, references to ASL 2, and maybe references to BSD 3.