MFC: Merge sendmail 8.16.1 from HEAD: See contrib/sendmail/RELEASE_NOTES for
details
Includes build infrastructure & config updates required for changes
in 8.16.1

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge sendmail 8.15.2 to HEAD

MFC after: 3 days

Merge sendmail 8.14.9 to HEAD

MFC after: 3 days

Merge sendmail 8.14.8 to HEAD

MFC after: 5 days

Merge sendmail 8.14.7 to HEAD

MFC after: 4 days

Merge sendmail 8.14.6 to HEAD

MFC after: 4 days

Merge sendmail 8.14.5 to HEAD

MFC after: 4 days

Merge sendmail 8.14.4 to HEAD

MFC after: 4 days

Fix an ABI breakage found after the import that will be part of the
next version of sendmail. Putting it in now for the upcoming 7-BETA
and 6-BETA test releases.

Submitted by: Mike Tancsa

Merge sendmail 8.14.3 into HEAD.

Note: As the first merge since the conversion to svn, it includes many
propset changes to get the proper svn:eol-style and svn:mime-type on the
files (as merged from the fixed up vendor/dist area).

MFC after: 3 days

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Remove Build files -- they rely on the devtools system which isn't imported
(or used)

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