!2 License compliance rectification

From: @wu-leilei 
Reviewed-by: @ruebb 
Signed-off-by: @ruebb

waf.spec

@@ -1,8 +1,8 @@
 Name:           waf
 Version:        2.0.19
-Release:        3
+Release:        4
 Summary:        A Python-based build system
-License:        BSD 
+License:        BSD-3-Clause
 URL:            https://waf.io/
 Source:         waf-%{version}.stripped.tar.bz2
 Source1:        unpack_wafdir.py
@@ -123,6 +123,9 @@ rm -f docs/sphinx/build/html/.buildinfo
 
 
 %changelog
+* Wed May 11 2022 wulei <wulei80@h-partners.com> - 2.0.19-4
+- License compliance rectification
+
 * Thu Aug 05 2021 weidong <weidong@uniontech.com> - 2.0.19-3
 - Init for openeuler