Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

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

Fix an off by one error to avoid overflowing rp[].

Reported by: Coverity
CID: 1007579

Don't leak 'var'.

Reported by: clang static analyzer

Timestamps may not have a decimal point.
While here, consistently use sbuf_new_auto().

Allow comments at end of line.

Reviewed by: marcel

Set st_nlink in the stat structure within the inode to 1 as well.
The cd9660 file system uses that field for the link count and it
was 0. This impacts pwd_mkdb(8) as it checks for st_nlink not being
0 as part of closing a race.

Support hardlinks in manifest files by the same logic as the treewalk
code.

Reviewed by: marcel
Sponsored by: DARPA, AFRL

Allow '.' components in manifest paths. They are always the first
component of mtree -C and install -M output and are easily skipped.

Reviewed by: marcel
Sponsored by: DARPA, AFRL

Fix the -N option in manifest mode by using pwcache(3). This also
speeds up image creation appreciably.

Reviewed by: marcel
Sponsored by: DARPA, AFRL

Add a -D flag that causes duplicate entries in an mtree manifest to be
treated as warnings rather than errors.

Reviewed by: marcel
Sponsored by: DARPA, AFRL

If no contents keyword is specified, the default for files is
the named file.

Approved by: marcel (mentor)

Add support for using mtree(5) manifest files to define the image
to be created. The support is based on mtree version 2.0, as used
in libarchive, but adds new features on top of it.

The current implementation is fully functional, but is envisioned
to grow at least the following additional features over time:
o Add support for the /include special command so that manifest
files can be constructed using includable fragments.
o Add support specifying a search path to locate content files.
o Content file filters: commands that provide file contents on
stdout.

The manifest file eliminates the need to first construct a tree
as root in order to create an image and allows images (releases)
to be created directly from object trees and/or source trees.

Reviewed by: deo
Sponsored by: Juniper Networks, Inc