Merged update from upstream sources

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Source: https://src.fedoraproject.org/rpms/mingw-gcc.git#5228502910b0b53638dd2535c7c917ed963d55b9

mingw-gcc.spec

@@ -30,7 +30,7 @@
 
 Name:           mingw-gcc
 Version:        %{gcc_version}
-Release:        4%{?dist}
+Release:        6%{?dist}
 Summary:        MinGW Windows cross-compiler (GCC) for C
 
 License:        GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions
@@ -669,6 +669,12 @@ ln -sf %{mingw64_bindir}/libssp-0.dll %{buildroot}%{mingw64_libdir}/libssp.dll.a
 
 
 %changelog
+* Thu Jan 28 2021 Richard W.M. Jones <rjones@redhat.com> - 10.2.1-6
+- Bump and rebuild for s390.
+
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 10.2.1-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Jan 19 12:33:56 CET 2021 Sandro Mani <manisandro@gmail.com> - 10.2.1-2
 - Rebuild (mingw-w64)