MFC r330878-r330879, r330939, r330948: Man-page updates

r330878: Fix typo and lint/igor warnings
r330879: Fix lint/igor warnings
r330939: Use full month in dpv(3), figpar(3), and bsdconfig(8) manuals
r330948: Bump copyright following recent changes

Sponsored by: Smule, Inc.

dpv(3): MFC r330943, r335264

r330943:
Fix bad error messages from dpv(3)

Before = dpv: <__func__>: posix_spawnp(3): No such file or directory
After = dpv: <path/cmd>: No such file or directory

Most notably, show the 2nd argument being passed to posix_spawnp(3)
so we know what path/cmd failed.

Also, we don't need to have "posix_spawnp(3)" in the error message
nor the function because that can [a] change and [b] traversed using
a debugger if necessary.

r335264:
Fix comparison between pointer and char literal

PR: misc/204252
Reported by: David Binderman <dcb314@hotmail.com>
Sponsored by: Smule, Inc.

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

Merge the projects/release-pkg branch to head.

This allows packaging the base system with pkg(8), including
but not limited to providing the ability to provide upstream
binary update possibilities for non-tier-1 architectures.

This merge is a requirement of the 11.0-RELEASE, and as such,
thank you to everyone that has tested the project branch.

Documentation in build(7) etc. is still somewhat sparse, but
updates to those parts will follow.

Sponsored by: The FreeBSD Foundation

Remove WARNS inherited fine by ../Makefile.inc.

Sponsored by: EMC / Isilon Storage Division

Fix fatal warn when compiling under GCC 5.2.0

GCC 5.2.0 generates the following [fatal] warning:
dialog_util.c:270:23: error:
zero-length gnu_printf format string [-Werror=format-zero-length]
sprintf(dargv[n++], "");

Fix malloc argument while here, removing sprintf.

Reported by: Ruslan Bukin <ruslan.bukin at cl cam ac uk>

Fix a crash if `-D' is used without `-t title'

dialog(3)'s dlg_reallocate_gauge(), used both by dialog(3)'s dialog_gauge()
and dialog(1)'s `--gauge', will segmentation fault in strlen(3) if no title
is set for the widget. Reproducible with `dialog --gauge hi 6 20' (adding
`--title ""' is enough to prevent segmentation fault).

MFC after: 3 days
X-MFC-to: stable/10

Remove unused function prototype

MFC after: 3 days
X-MFC-to: stable/10

Bump copyrights

Add keep_tite configuration option

Similar to dialog(3) keep_tite option used to prevent visually disturbing
initialization or exit that could occur when run from a script using
dpv(3) by way of dpv(1) in sequence with other dialog(1) invocations.

Default to en_US.ISO8859-1 if no locale

MFC after: 3 days
X-MFC-to: stable/10

Bump copyright (forgotten part of r293340)

MFC after: 3 days
X-MFC-to: stable/10
X-MFC-with: r293340

Increase maximum buffer size for `-x cmd' value

MFC after: 3 days
X-MFC-to: stable/10

META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host.

This both avoids some dependencies on xinstall.host and allows
bootstrapping on older releases to work due to lack of at least 'install -l'
support.

Sponsored by: EMC / Isilon Storage Division

Make figpar(3) types/macros [more] unique (s/fp_/figpar_/gi)

Bump date/copyright after correcting HISTORY

MFC after: 3 days
X-MFC-to: stable/10
X-MFC-with: r289790

dpv(3) merged to stable/10 before release/10.2.0

MFC after: 3 days
X-MFC-to: stable/10

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

Clean up unused variable and silence clang warnings.

Differential Revision: D2682
Reviewed by: rodrigc

Fix a debug statement. Only the callback function (performing the
incrementing of dpv_overall_oread) knows what its purpose is (and
often times it was bytes, not lines).

MFC after: 3 days
X-MFC-to: stable/10

mdoc: improvements to SEE ALSO.

Convert libraries to use LIBADD
While here reduce a bit overlinking

Misc mdoc fixes:

- Remove superfluous paragraph macros.
- Remove/fix empty or incorrect macros.
- Sort sections into conventional order.
- Terminate quoted strings properly.
- Remove EOL whitespace.

Balance DPADD against LDADD for dpv(1,3).

Thanks to: ngie
MFC after: 21 days
X-MFC-to: stable/10 stable/9
X-MFC-with: 274116 274120 274121 274123 274144

Fix buildworld by adding DPADD= to libdpv [dpv(3)] Makefile
NB: Should also address `make -j' building
Remove "+" from "+=" in assignments to DPADD/LDADD while here.
NB: Also move CFLAGS for style measure.

Reviewed by: shurd
MFC after: 21 days
X-MFC-to: stable/10 stable/9
X-MFC-with: 274116 274120 274121

Make libdpv [dpv(3)] WARNS=6 clean for clang on -CURRENT.
NB: aka unbreak the build

Reviewed by: shurd
MFC after: 21 days
X-MFC-to: stable/10 stable/9
X-MFC-with: 274116 274120

Fix build-error (pointy hat; didn't merge full up-to-date code)

MFC after: 21 days
X-MFC-to: stable/10 stable/9
X-MFC-with: 274116

Add new libraries/utilities for data throughput visualization.
dpv(3): dialog progress view library
dpv(1): stream data from stdin or multiple paths with dialog progress view
figpar(3): configuration file parsing library

Reviews: D714
Reviewed by: jelischer, shurd
Discussed at: MeetBSD California 2014 Vendor/Dev Summit
Discussed on: -current
MFC after: 21 days
X-MFC-to: stable/10 stable/9