cocci: sort "the_repository" rules by header

Sort the "the_repository.pending.cocci" file by which header the macros are in, and add a comment to that effect in front of the rules. This will make subsequent commits easier to follow, as we'll be applying these rules on a header-by-header basis. Once we've fully applied "the_repository.pending.cocci" we'll keep this rules around for a while in "the_repository.cocci", to help any outstanding topics and out-of-tree code to resolve textual or semantic conflicts with these changes, but eventually we'll remove the "the_repository.cocci" as a follow-up. So even if some of these functions are subsequently moved and/or split into other or new headers there's no risk of this becoming stale, if and when that happens the we should be removing these rules anyway. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>