Portfile helper functions vcpkg_acquire_msys vcpkg_apply_patches vcpkg_build_msbuild vcpkg_configure_cmake vcpkg_copy_pdbs vcpkg_copy_tool_dependencies vcpkg_download_distfile vcpkg_execute_required_process vcpkg_extract_source_archive vcpkg_find_acquire_program vcpkg_from_github vcpkg_install_cmake