convert license to SPDX

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

p7zip.spec

@@ -7,9 +7,10 @@
 Summary: Very high compression ratio file archiver
 Name: p7zip
 Version: 16.02
-Release: 29%{?dist}
+Release: 30%{?dist}
 # Files under C/Compress/Lzma/ are dual LGPL or CPL
-License: LGPLv2 and (LGPLv2+ or CPL)
+# Automatically converted from old format: LGPLv2 and (LGPLv2+ or CPL) - review is highly recommended.
+License: LicenseRef-Callaway-LGPLv2 AND (LicenseRef-Callaway-LGPLv2+ OR CPL-1.0)
 URL: http://p7zip.sourceforge.net/
 # RAR sources removed since their license is incompatible with the LGPL
 #Source: http://downloads.sf.net/p7zip/p7zip_%%{version}_src_all.tar.bz2
@@ -175,6 +176,9 @@ make test
 
 
 %changelog
+* Wed Sep 04 2024 Miroslav Suchý <msuchy@redhat.com> - 16.02-30
+- convert license to SPDX
+
 * Thu Jul 18 2024 Fedora Release Engineering <releng@fedoraproject.org> - 16.02-29
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild