Use SRCTOP-relative paths and .CURDIR with :H instead of ".." specified paths

This implifies pathing in make/displayed output

MFC after: 3 weeks
Sponsored by: Dell EMC Isilon

Convert libraries to use LIBADD
While here reduce a bit overlinking

NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will

NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.

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Convert old make variable modifiers :U and :L to bmake :tu and :tl.

Reviewed by: sjg

Only install manpages and html documentation in the ncurses/*w (wchar)
builds so that it is only installed once. This is consistent with the
existing decision to only install headers in the that cas

Only install manpages and html documentation in the ncurses/*w (wchar)
builds so that it is only installed once. This is consistent with the
existing decision to only install headers in the that case.

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- When I introduce wide character enabled ncurses into base, all headers
are installed twice (once in non-widec version, onec in widec version).
Headers with widec enabled are compatible with non

- When I introduce wide character enabled ncurses into base, all headers
are installed twice (once in non-widec version, onec in widec version).
Headers with widec enabled are compatible with non-widec version
for libraries. However, if you do a repeat build/install, the curses.h
is always overwritten. The reason is that headers and statics libraries
are installed with -S option to preserve their mtime if no actual changes,
which saves time when doing incremental builds. The curses.h is installed
by non-widec ncurses first, then by widec ncurses. So next time, it happens
again. You see something like this:

# pwd
/usr/src/lib/ncurses
# make -s installincludes INSTALL="install -v"
===> ncurses (installincludes)
install: curses.h -> /usr/include/curses.h
===> ncursesw (installincludes)
install: curses.h -> /usr/include/curses.h
# make -s installincludes INSTALL="install -v"
===> ncurses (installincludes)
install: curses.h -> /usr/include/curses.h
===> ncursesw (installincludes)
install: curses.h -> /usr/include/curses.h

The solution is to disable installing headers in non-widec version. Now
you see this:

# pwd
/usr/src/lib/ncurses
# make -s installincludes INSTALL="install -v"
===> ncurses (installincludes)
===> ncursesw (installincludes)
# make -s installincludes INSTALL="install -v"
===> ncurses (installincludes)
===> ncursesw (installincludes)

For form/panel/menu libraries, the headers are the same for both version.
To be consistent with ncurses, I also disable the installation in non-widec
version.

Reported by: des
Reviewed by: ru
Thanks to: ru
Approved by: delphij (mentor)
MFC after: 2 weeks

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Enable ncurses wide character support

Approved by: delphij (mentor)
Tested by: kris on pointyhat (early version), current@

- style.Makefile(9) fix
- first line is $FreeBSD$
- Reorder special variables: DPADD, LPADD, CFLAGS
- Use = instead of += for variables that are initially empty
- Use space instead of tab aft

- style.Makefile(9) fix
- first line is $FreeBSD$
- Reorder special variables: DPADD, LPADD, CFLAGS
- Use = instead of += for variables that are initially empty
- Use space instead of tab after :
- Use one tab after =
- Use .SUFFIXES for section 3 manual page which simplifies Makefile a lot
- Use SHAREDIR instead of /usr/share
- Remove SRCDIR in INCS since we set .PATH properly
- Use plural in variable name when it stands for more that one source file

Reviewed by: ru
Approved by: delphij (mentor)

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Introduce new ncurses build glues which are part of ncurses 5.6 update.

Approved by: delphij
Inspired by: DragonFly's and lib/bind

Add missing shared library interdependencies.

Use
cat ${.ALLSRC} > ${.TARGET}
rather than
ln -sf ${.ALLSRC} ${.TARGET}
not to depends on absolute-path of symbolic links.

Commented by: marcel, obrien, bde

Make this a little easier to build standalone. (same change as libpanel)

MAN[1-9] -> MAN.

Install manpages, including appropriate MLINKS.

Update for ncurses 5.1-20001009 import

Add missing source files. Sort SRCS.

PR: 18631

Replace beforeinstall target with new variables used by .mk system.

Reviewed by: marcel, and make world

Add bmake glue for libform (the SVSV-style ETI curses form driver from
ncurses)