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 mergedhere.Additional commits post-branch will follow.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
- mdoc: remove superfluous paragraph macros.- fix typo in xref manual section number.
Remove non existent in FreeBSD reference.
Add manual page for vmem(9). Obtained from NetBSD, modified to matchour implementation.Obtained from: NetBSD