ctf: Add definitions for CTFv3

These are based on definitions added to binutils' libctf. Specifically:
- Type IDs are now encoded in 32 bits rather than 16, changing the
layout of ctf_type_t, ctf

ctf: Add definitions for CTFv3

These are based on definitions added to binutils' libctf. Specifically:
- Type IDs are now encoded in 32 bits rather than 16, changing the
layout of ctf_type_t, ctf_array_t, ctf_member_t and ctf_lmember_t.
- Type info is encoded in 32 bits rather than 16. The type "kind" is
extended from 5 bits to 6, and the type "vlen" is extended from 10
bits to 25.

The main upside is that we remove the current limit, imposed by CTFv2,
of 2^{15} distinct types in the main kernel executable. Other limits,
such as that on the number of elements in an enum, imposed by the vlen
limit, are also raised.

This change adds v2 and v3 flavours of macros and type definitions which
differ between the two versions. Compatibility is preserved for now by
having generic names refer to the v2 definitions, so, e.g., ctf_type_t
is still a v2 type.

No functional change intended.

Reviewed by: Domagoj Stolfa
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34360

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MFHead @r350386

Sponsored by: The FreeBSD Foundation

Reference stdint.h types in ctf.5.

MFC after: 1 week

Merge ^/head r323559 through r325504.

MFhead@r324884

Address some miscellaneous issues in the CTF man page.

- Fix a number of typos.
- Replace some illumos-specific references.
- Note that a type definition of kind CTF_K_FUNCTION may be followed by

Address some miscellaneous issues in the CTF man page.

- Fix a number of typos.
- Replace some illumos-specific references.
- Note that a type definition of kind CTF_K_FUNCTION may be followed by
a null type identifier in order to provide 4-byte alignment for the
next type definition.

MFC after: 2 weeks

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MFV r323105 (partial): 8300 fix man page issues found by mandoc 1.14.1

illumos/illumos-gate@72d3dbb9ab4481606cb93caca98ba3b3a8eb6ce2
https://github.com/illumos/illumos-gate/commit/72d3dbb9ab4481606c

MFV r323105 (partial): 8300 fix man page issues found by mandoc 1.14.1

illumos/illumos-gate@72d3dbb9ab4481606cb93caca98ba3b3a8eb6ce2
https://github.com/illumos/illumos-gate/commit/72d3dbb9ab4481606cb93caca98ba3b3a8eb6ce2

https://www.illumos.org/issues/8300
Prior to integrating the mdocml update to 1.14.1, fix issues found by
new version, especially the "new sentence, new line" style rule.

FreeBSD note: this revision merges only the changes to the CTF manual
page. The changes to the ZFS pages cannot be applied directly.

Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Gordon Ross <gwr@nexenta.com>
Author: Yuri Pankov <yuri.pankov@nexenta.com>

Discussed with: avg
MFC after: 2 weeks

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Merge sync of head

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

MFhead @ r275663

Merge ^/head r275478 through r275622.

MFV r272851:

5202 want ctf(4)

illumos/illumos-gate@fe2e029eea29fd49d0d9058dbd5b79a252667e6b