with the following additional commits:
* [7a0c729]->[d78c62e] maint: fix public-submodule-commit to work with newer git
+ * [cfe23e8]->[79ca097] autoupdate
+ * [5088dc5]->[7e54a06] manywarnings: remove -Wmudflap
+ * [fe3419d]->[cd56634] doc: use ASCII in .texi files where UTF-8 isn't needed
+ * [580240a]->[] include_next: port to autoconf 2.63
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