MFC r326276:

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

MFC r313659-r313673

r313659:
Remove space at and of line

Reported by: make manlint
MFC after: 2 days

r313660:
Remove empty Li

Reported by: make manlint
MFC after: 2 days

r313661:
Escape Ss to avoid confusion by mdoc parser with the Ss macro

Reported by: make manlint
MFC after: 2 days

r313662:
Add missing -width after -Bl -tag

Reported by: make manlint
MFC after: 2 days

r313663:
Add missing section after .Xr reference

r313664:
Escape No to avoid confusion with the No macro

r313665:
Remove useless .Pp after the .Sh macro and remove empty line

r313666:
Remove empty space at EOL and escept Ed

r313667:
Remove spaces at EOL and sort correctly the SEE ALSO section

r313668:
Add missing section in manpage reference

r313669:
Properly use .An macro before Authors name

r313670:
Escape Sm to avoid confusion with Sm macro

r313671:
Use correct date format

r313672:
Remove useless Li macro

r313673:
Remove spaces at end of line

Reported by: make manlint

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

- Match directory extraction message with Infozip [1]
- Add comment explaining masks in check_binary()

Obtained from: NetBSD [1]
Approved by: des

- Extract common code from extract()/extract_stdout() to extract2fd()
- Update information about central directory handling

Obtained from: NetBSD
Approved by: des

- Properly set mode and atime/ctime for symlinks

Approved by: des

- Allow to extract symlinks
- Implement 4-digit year format listing (-y option)
- Improve detection of text files
- Use %ju for error_count as it is unsigned

Obtained from: NetBSD
Approved by: des

- Remove stray whitespaces

Approved by: des

Add META_MODE support.

Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision: D2796
Reviewed by: brooks imp

unzip: Don't subvert vfs.timestamp_precision when setting atime to now.

Also, preserve nanoseconds from libarchive, even though the zip file format
does not currently support nanoseconds in timestamps.

Convert to usr.bin/ to LIBADD
Reduce overlinking

use .Mt to mark up email addresses consistently (part3)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

Replace deprecated (or remove obsolete) libarchive 2.8 functions
with libarchive 3.0 counterparts

Remove contractions.

Pass a filename, rather than a file descriptor, to libarchive.

Submitted by: Alex Kozlov <spam@rm-rf.kiev.ua>
MFC after: 1 week

Document the unzip(1) '-Z' option implemented in r234206.

Submitted by: swills (via hacker lounge)
MFC after: 3 days

Correct my name in the copyright statement.

Partially implement zipinfo (-Z) support.
This fixes some test failures seen with perl 5.12 and 5.14.

PR: bin/166895
Submitted by: swills
MFC after: 3 days

Remove superfluous paragraph macro.

fgets(3) returns a pointer, so compare against NULL, not integer 0.

Reencode files from latin1 to UTF-8.

This makes a tiny percentage of entries in calendars ugly for latin1
users, but fixes them for UTF-8 users.

This badly needs a solution involving locale-dependent re-encoding.

Fix broken mdoc.

Found by: manlint
Approved by: re (kib)

Fix typo in last commit.

Submitted by: bcr

Document possibility to read from stdin.

Make it possible to read input from stdin.

Without this change I don't see a way to
unpack a multivolume archive without wasting
disk space for a temporary file.

Check return value from archive_read_new().

Found with: Coverity Prevent(tm)
CID: 8462
Reviewed by: des
MFC after: 1 week

Fixed static linkage.

Bump .Dd for r203977

MFC after: 1 month

Implement the rename query, for when a file with the same name as the one
about to be extracted already exists. The question, and interpretation
of the response is deliberately compatible with Info-Zip.

This change was originally obtained from NetBSD, but has three changes:
- better compatibility with Info-Zip in the handling of ^D
- Use getdelim() rather than getline()
- bug fix: != changed to == in the "file rename" code

I suspect the latter is also a bug in NetBSD, but I can't easily confirm
this.

PR: bin/143307
Reviewed by: rdivacky (change to unzip.c only)
Obtained from: NetBSD src/usr.bin/unzip/unzip.c 1.8
MFC after: 1 month

When restoring files, use the mode for the mode.

Thanks to: Jun Kuriyama for pointing this out

Build usr.bin/ with WARNS=6 by default.

Also add some missing $FreeBSD$ to keep svn happy.

Don't print the archive name with -p and -q options.

PR: bin/141280
Approved by: des, trasz (mentor)

Add C/c/f/p/v switches plus a bunch of minor fixes and cleanups.

Obtained from: NetBSD
Approved by: des (maintainer)
Approved by: ed (mentor, implicit)

Update man page for -t.

Quick shot at implementing -t (test).

Requested by: ache
MFC after: 2 weeks

Welcome unzip(1), a pure BSD drop-in replacement for ports/unzip. In its
current state, it can handle all but four of the 991 zip files (including
jar files) I was able to identify in the ports tree. The remaining four
are two self-extracting archives and two which have garbage preceding the
first local header. This limitation is a feature of libarchive(3) which
I am currently working to resolve.

The code is unnecessarily large due to the need to emulate the exact
command-line syntax and behaviour of ports/unzip. My initial incompatible
implementation was one quarter the size of the one I am committing here.