Merged update from upstream sources

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Source: https://src.fedoraproject.org/rpms/libpipeline.git#dc7e3586129574e77cc1e0e99a0c12d119e1bfd7

libpipeline.spec

@@ -3,13 +3,14 @@
 Summary: A pipeline manipulation library
 Name: libpipeline
 Version: 1.5.3
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv3+
 URL: http://libpipeline.nongnu.org/
 Source: http://download.savannah.gnu.org/releases/libpipeline/libpipeline-%{version}.tar.gz
 
 BuildRequires: gcc
 BuildRequires: libtool, check-devel
+BuildRequires: make
 
 # FPC exception for gnulib - copylib - https://fedorahosted.org/fpc/ticket/174
 Provides: bundled(gnulib) = %{gnulib_ver}
@@ -57,6 +58,9 @@ rm $RPM_BUILD_ROOT/%{_libdir}/libpipeline.la
 %{_mandir}/man3/*
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.5.3-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Mon Aug 17 2020 Nikola Forró <nforro@redhat.com> - 1.5.3-1
 - update to 1.5.3
   resolves: #1868648