[PATCH] Bindings to *at functions & allowing more functions to operate on ports

[Maxime Devos]

Hi guilers!

This patch series defines:
* More AT_* and O_* flags.
* Bindings to *at functions (e.g. mkdirat, fchmodat).
* Bindings to f* functions (e.g. fchdir).
  (No new functions, the old functions just accept more types.)

It also sprinkles some scm_remember_upto_here's in
some procedures operating on ports where I think it's needed.

I haven't assigned copyright to the FSF, how would this work?

Greetings,
Maxime

0001-Add-scm_remember_upto_here-to-functions-using-a-port.patch
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0002-Allow-file-ports-in-chdir-when-supported.patch
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0003-Allow-file-ports-in-readlink.patch
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0004-Accept-open-file-ports-in-utime-when-supported.patch
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0005-Define-symlinkat-wrapper-when-supported.patch
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0006-Define-bindings-to-mkdirat-when-the-C-function-exist.patch
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0007-Define-AT_REMOVEDIR-and-others-when-available.patch
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0008-Define-a-Scheme-binding-to-renameat-when-it-exists.patch
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0009-Define-a-Scheme-binding-to-fchmodat-when-defined.patch
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0010-Define-delete-file-at-when-unlinkat-exists.patch
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0011-Define-a-Scheme-binding-to-fchownat-when-available.patch
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0012-Define-a-Scheme-binding-to-fstatat-when-available.patch
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0013-Define-a-Scheme-binding-to-openat-when-available.patch
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0014-Define-a-Scheme-binding-to-readlinkat-when-it-exists.patch
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0015-Define-a-Scheme-binding-to-linkat-when-available.patch
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0016-Define-a-Scheme-binding-to-mknodat-when-supported.patch
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0017-Document-recent-new-bindings-for-file-system-functio.patch
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