Fix SPDX licensing string

Fix sourceware.org/PR31017
suppression-Add-has_strict_flexible_array_data_membe.patch

Fix sourceware.org/PR31045
Bug-31045-Don-t-try-setting-translation-unit-for-uni.patch.
Use
q

q
build"
build>"
-force .
q --allow-empty -a\
-author "rpm-build <rpm-build>" -m "libabigail-2.4 base"
-track -b rpm-build

Bug-31045-Don-t-try-setting-translation-unit-for-uni.patch |
-index --reject -
q -m 0001-Bug-31045-Don-t-try-setting-translation-unit-for-uni.patch --author "rpm-build <rpm-build>"

suppression-Add-has_strict_flexible_array_data_membe.patch |
-index --reject -
q -m 0002-suppression-Add-has_strict_flexible_array_data_membe.patch --author "rpm-build <rpm-build>"

Use SPDX licensing reference
Add git as a build requirement

Update to upstream 2.4 tarball
Drop patches
Fix-fedabipkgdiff-configure-check-for-Python-3.12.patch and
Fix-fedabipkgdiff-configure-check-for-Python-3.12.patch
Enable build with support for BTF
Added BuildRequires: libbpf-devel
Support soname bumped to libabigail.so.3.0.0

Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild

Update to upstream 2.3 release
Don't do "dos2unix doc/manuals/html/_static/jquery.js"
The libaigail binary is now libabigail.so.2.0.0.

Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild

Update to upstream 2.2 release.
Switch to a tar.xz tarball.

Update to upstream 2.1
Add libabigail.so.1 and libabigail.so.1.0.0 to the package.
Enable CTF support when running the tests.
Add binutils-devel as BuildRequires, for CTF.