modify license in spec file

antlr.spec

@@ -2,10 +2,10 @@
 
 Name:          antlr
 Version:       2.7.7
-Release:       59
+Release:       60
 Summary:       A parser generator that uses LL(*) for parsing
 Epoch:         0
-License:       ANTLR-PD
+License:       public domain
 URL:           http://www.antlr2.org/
 Source0:       https://www.antlr2.org/download/antlr-2.7.7.tar.gz
 Source1:       %{name}-build.xml
@@ -102,6 +102,9 @@ install -p -m755 scripts/antlr-config $RPM_BUILD_ROOT%{_bindir}/antlr-config
 %doc doc/*
 
 %changelog
+* Wed dec 16 2020 Ge Wang <wangge20huawei.com> - 2.7.7-60
+- Modify license 
+
 * Wed Oct 21 2020 chengzihan <chengzihan2@huawei.com> - 2.7.7-59
 - Remove subpackage python2-antlr