Obsolete noopenh264 stub package

The plan is to distribute the noopenh264 stub package in Fedora
proper, and have the actual openh264 implementation from Cisco repos
obsolete and replace it.

See https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=2247274 for the
noopenh264 package review.

This should finally get us to a point where we can get the openh264
package automatically installed on Fedora Workstation on first update
(see https://pagure.io/fedora-workstation/issue/84#comment-883140) and
also opens up ways to build dependent packages that link with openh264,
without actually including openh264 in the build roots.

openh264.spec

@@ -32,6 +32,9 @@ BuildRequires:  make
 BuildRequires:  meson
 BuildRequires:  nasm
 
+# Replace the stub package
+Obsoletes:      noopenh264 < 1:0
+
 %description
 OpenH264 is a codec library which supports H.264 encoding and decoding. It is
 suitable for use in real time applications such as WebRTC.
@@ -40,6 +43,8 @@ suitable for use in real time applications such as WebRTC.
 %package        devel
 Summary:        Development files for %{name}
 Requires:       %{name}%{?_isa} = %{openh264_version}-%{release}
+# Replace the stub package
+Obsoletes:      noopenh264-devel < 1:0
 
 %description    devel
 The %{name}-devel package contains libraries and header files for
@@ -226,6 +231,7 @@ popd
 %changelog
 * Fri Nov 24 2023 Kalev Lember <klember@redhat.com> - 2.4.0-1
 - Update to 2.4.0
+- Obsolete noopenh264 stub package
 
 * Wed Nov 22 2023 NoisyCoil <noisycoil@tutanota.com> - 2.3.1-4
 - Set MOZ_GMP_PATH for fish user shell