convert license to SPDX

This is part of https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_4

phpcpd.spec

@@ -25,10 +25,11 @@
 
 Name:           %{pk_project}
 Version:        6.0.3
-Release:        10%{?dist}
+Release:        11%{?dist}
 Summary:        Copy/Paste Detector (CPD) for PHP code
 
-License:        BSD
+# Automatically converted from old format: BSD - review is highly recommended.
+License:        LicenseRef-Callaway-BSD
 URL:            https://github.com/%{gh_owner}/%{gh_project}
 Source0:        %{name}-%{version}-%{gh_short}.tgz
 Source1:        makesrc.sh
@@ -136,6 +137,9 @@ exit $ret
 
 
 %changelog
+* Wed Sep  4 2024 Miroslav Suchý <msuchy@redhat.com> - 6.0.3-11
+- convert license to SPDX
+
 * Fri Jul 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 6.0.3-10
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild