On Fri, 8 Jul 2016 at 13:47 Xavier de Gaye <xdegaye@gmail.com> wrote:
The files generated by Programs/_freeze_importlib.c
    Python/importlib.h
    Python/importlib_external.h
are modified by the build after the last changeset d32517de5d8c
(Issue #26972: Fix some mistakes in importlib-related docstrings.).

All that means is I forgot to run `make` after applying a patch that updated some docstrings. I have subsequently committed the updated .h files.