Merge "Add implementation of dir function"

    """Returns basename."""

    return path.rsplit("/",1)[-1]

def __dir(path):

    """Returns dirname."""

    return path.rsplit("/",1)[0]

def _board_platform_in(g, string_or_list):

    """Returns true if board is in the list."""

    board = g.get("TARGET_BOARD_PLATFORM","")

    copy_files = _copy_files,

    copy_if_exists = _copy_if_exists,

    cfg = __h_cfg,

    dir = __dir,

    enforce_product_packages_exist = _enforce_product_packages_exist,

    expand_wildcard = _expand_wildcard,

    file_exists = rblf_file_exists,