message: [boost] Add feature packages for regex-icu, locale-icu, and python
diff: @@ -591,11 +591,12 @@ namespace vcpkg::Install
  const Build::BuildPackageOptions install_plan_options = {Build::to_use_head_version(use_head_version),
  Build::to_allow_downloads(!no_downloads)};
  + // Note: action_plan will hold raw pointers to SourceControlFiles from this map
  + std::unordered_map<std::string, SourceControlFile> scf_map;
  std::vector<AnyAction> action_plan;
  if (GlobalState::feature_packages)
  {
  - std::unordered_map<std::string, SourceControlFile> scf_map;
  auto all_ports = Paragraphs::load_all_ports(paths.get_filesystem(), paths.ports);
  for (auto&& port : all_ports)
  {
  