Hook zstd to the build and enable it for libarchive and file.

merge conflicts (4 tests still fail)

Merge conflicts from 3.4.0 to 3.7.4

Add ACL support for FFS. From FreeBSD.

Switch the iconv(3) prototype to the POSIX conformant variation

Remove const from the 2nd argument.

const char ** and char ** are incompatible types and it was a cost to keep
the technically incomp

Switch the iconv(3) prototype to the POSIX conformant variation

Remove const from the 2nd argument.

const char ** and char ** are incompatible types and it was a cost to keep
the technically incompatible form for a more purist variation. NetBSD was
almost the last alive OS to still keep the const argument (known leftovers:
Minix and Illumos).

Keep the const form for the internal purposes inside citrus and rump.

Address the build breakage fallout in the same change.

There are no ABI changes.

Change accepted by core@.

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Update build glue and configuration for libarchive 3.4.0.

Simplify linking libarchive with libcrypto

Obey MKCRYPTO.

Update build system for libarchive-3.3.2pre.

we JAVE_SSIZE max.

Enable direct XZ support

Regen for libarchive 2.8.4

Update for libarchive 2.8.2

Update build infrastructure for libarchive 2.8.0.

Add build glue for libarchive and the frontends. cpio and tar are still
disabled.