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

multiple: Remove 3rd clause from BSD license where approved by the
regents and renumber.

This patch skips files in contrib/ and crypto/

Acked by: imp
Discussed with: emaste

Sort sections.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: removed history info from the .Os FreeBSD call.

mdoc(7) police: use the new features of the Nm macro.

$Id$ -> $FreeBSD$

Typo police.

Install new intro.5 man page.