Add missing header file (openssl/ml_kem.h) of OpenSSL 3.5

Reviewed by:	fluffy, ngie
Approved by:	ngie (maintainer)
Differential Revision:	https://reviews.freebsd.org/D56291

MFC after:      1 day (the security issues warrant a quick backport).
MFC with:       10a428653ee7216475f1ddce3fb4cbf1200319f8

A new manpage and any associated links will be added in the next commit.

MFC after:      1 day (the security issues warrant a quick backport).
MFC with:	10a428653ee7216475f1ddce3fb4cbf1200319f8

This change modifies the libcrypto PIC objects to always compile with
`-DOPENSSL_PIC -fPIC` to restore parity with the upstream build process.
This ensures that the legacy provider is built with parity to the
upstream legacy provider.

MFC after:              12 days
Tested with:		`make check` (legacy provider), `make universe`
Fixes:			14b9955e
Differential Revision:  https://reviews.freebsd.org/D44896

This commit broke the build with some build options.

Some validation needs to be done to confirm that moving the preprocessor
argument to `secure/lib/libcrypto/Makefile.inc` works without breaking
the build, but revert for now until a `tinderbox` run can be done with
the change.

PR:		293934
Reported by:	Jenkins, Trond Endrestøl

This reverts commit 14b9955e57cc28b61e785165b9effcbe620edb46.

This change modifies the libcrypto PIC objects to always compile with
`-DOPENSSL_PIC` to restore parity with the upstream build process. This
ensures that `-DOPENSSL_PIC` is used whenever building the auxiliary
shared objects. In this case, just the legacy provider (we no longer
distribute the fips provider).

MFC after:		2 weeks
Differential Revision:	https://reviews.freebsd.org/D44896

A separate EVP_CIPHER_CTX_get_app_data.3 was added in the OpenSSL 3.5.5
import, but the link to EVP_EncryptInit.3 was still being installed
which stomped on the file and created inconsistent entries in the METALOG.

Reviewed by:	emaste
Found by:	package_check script in Cirrus-CI
Fixes:		1731fc70f734 ("OpenSSL: update vendor sources to match 3.5.5 content")
Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D55332

MFC with:	f25b8c9fb4f58cf61adb47d7570abe7caa6d385d
MFC after:	1 week

libcrypto's Makefile.inc used PACKAGE=openssl, which overrides the
PACKAGE=tests in libcrypto/tests/Makefile.  Use PACKAGE?=openssl
instead to avoid this.  This puts the OpenSSL tests in the tests
package where they belong.

MFC after:	1 day
Reviewed by:	manu, ngie
Sponsored by:	https://www.patreon.com/bsdivy
Differential Revision:	https://reviews.freebsd.org/D53595

The .pc files generated in the root directory are used as part of the
build; they should never be installed. Use the versions from the
exporters subdirectory--which should be installed--as the .pc files
which are distributed with FreeBSD. This avoids the need for "fixing up"
these files after the fact (see `crypto/openssl/BSDmakefile` for more
details as part of this change).

Garbage collect `secure/lib/libcrypto/Makefile.version`, et al,
as they're orphaned files. They were technically unused prior to this
change as the vendor process properly embeds the version numbers in
various files, but this commit formalizes the removal.

This correction/clarification on the .pc files will be made in an
upcoming release of OpenSSL [1].

References:
1. https://github.com/openssl/openssl/issues/28803

Suggested by:	Richard Levitte (OpenSSL project)
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D53043