Add patch for Boost.Accumulators bug

add symlink for b2 files

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

Rebuilt for ICU 73.2

Update License for SPDX migration

Rebuilt for Python 3.12

Fix build for riscv64
riscv/boost/tree/f38-rv64

Change spec file to use autospec for applying patches

Add patch for Boost.Phoenix bugs (#2178210)

Rebase to 1.81.0
Drop patches:
1.58.0-pool.patch
1.58.0-pool-test_linking.patch
1.78.0-build-optflags.patch
1.73-locale-empty-vector.patch
1.76.0-fix_multiprecision_issue_419-ppc64le.patch
1.76.0-ptr_cont-xml.patch
1.78.0-fix-b2-staging.patch
1.76.0-enum_type_object-type-python-3.11.patch
New Boost.URL runtime component
boost_build directory is now b2 in upstream, rename to boost_build on install

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

Rebuild for ICU 72

Rebuilt for ICU 71.1

Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild

Add boost-json to umbrella package

Restore Provides for boost-python3-devel (#2100748)