Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

MFC r261261: Restore the Nx macro.

PR: 186205
Submitted by: naddy

Hoist all the mergeinfo up to the root in preparation for enforcing merges
to the root only. All MFC's were rerecorded to the root.

Going forward, if an MFC includes mergeinfo, it will need to be made to
the root and committed from the root. Merges with --ignore-ancestry
or diff | patch can go anywhere.

The mergeinfo in HEAD is in a bad state from years of neglect and manual
tampering and this was branched into 10.x. This confuses the coalescing
code and prevents it from doing its job.

Approved by: re (gjb, implicit)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Update to the latest (un)vis(3) sources from NetBSD. This adds
multibyte support[0] and the new functions strenvisx and strsenvisx.

Add MLINKS for vis(3) functions add by this and the initial import from
NetBSD[1].

PR: bin/166364, bin/175418
Submitted by: "J.R. Oldroyd" <fbsd@opal.com>[0]
stefanf[1]
Obtained from: NetBSD
MFC after: 2 weeks

Replace our implementation of the vis(3) and unvis(3) APIs with
NetBSD's. This output size limited versions of vis and unvis functions
as well as a set of vis variants that allow arbitrary characters to be
specified for encoding.

Finally, MIME Quoted-Printable encoding as described in RFC 2045 is
supported.

Vendor import of NetBSD's (un)vis(3) at 2012-12-14 (2nd one)

Vendor import of NetBSD's (un)vis(3) at 2012-12-14

Vendor import of NetBSD's (un)vis(3) as of 2012-10-05