Update ncurses and associated libraries (form, panel, menu) to
6.4-20230826 (from 5.7-20081102).

Based on result from Thomas Dickey's ncu2openbsd script and then
modified. Switches to the upstream tput. Major bump for the ncurses
libraries and for libedit and libreadline.

Help from tb, millert.

ok deraadt sthen

Don't return ERR if resize didn't change size
This is a backport of the ncurses 5.9 20120707 patch.
Previously, getch() would return ERR if SIGWINCH was received but
the window didn't actually change size. This can happen, for
example, when the xterm font is changed. OK tb@

Update to ncurses 5.7, with local changes reapplied.

This is around eight years worth of changes (previously we were around ncurses
5.2), too many to list - many bug fixes and also a few new functions.

A major bump for libcurses, libpanel, libform and libmenu.

ok deraadt

Update to ncurses-5.2-20010114

update to ncurses-5.1-20001007

Update to ncurses-5.0-20000304

+ corrected conversion from terminfo rs2 to termcap rs (cf: 980704)
+ make conversion to termcap ug (underline glitch) more consistently applied.
+ modify read_termtype(), fixing 'toe', which could dump core when it
found an incomplete entry such as "dumb" because it did not
initialize its buffer for _nc_read_file_entry().
+ use explicit VALID_NUMERIC() checks in a few places that had been
overlooked, and add a check to ensure that init_tabs is nonzero,
to avoid divide-by-zero (reported by Todd C Miller).

update to ncurses-5.0-19991127

ncurses-5.0-990821

ncurses-5.0-990703 -- better support for mixing termcap and terminfo/curses routines

ncurses-5.0-990612

ncurses-4.2-990301

Move call to _nc_read_bsd_terminfo_entry() to _nc_read_entry() so reading
terminfo.db is transparent. This requires us to be able to tell which
of the entries in pathvec held the terminfo entry. To make that work
we only pass one pathname to cgetent(3) at a time. This might be a
slight performance hit but should not be noticable in normal use.

ncurses-4.2-990116

Don't return ERR if resize didn't change size
This is a backport of the ncurses 5.9 20120707 patch.
Previously, getch() would return ERR if SIGWINCH was received but
the window didn't actually change size. This can happen, for
example, when the xterm font is changed. OK tb@

Update to ncurses 5.7, with local changes reapplied.

This is around eight years worth of changes (previously we were around ncurses
5.2), too many to list - many bug fixes and also a few new functions.

A major bump for libcurses, libpanel, libform and libmenu.

ok deraadt

Update to ncurses-5.2-20010114

update to ncurses-5.1-20001007

Update to ncurses-5.0-20000304

+ corrected conversion from terminfo rs2 to termcap rs (cf: 980704)
+ make conversion to termcap ug (underline glitch) more consistently applied.
+ modify read_termtype(), fixing 'toe', which could dump core when it
found an incomplete entry such as "dumb" because it did not
initialize its buffer for _nc_read_file_entry().
+ use explicit VALID_NUMERIC() checks in a few places that had been
overlooked, and add a check to ensure that init_tabs is nonzero,
to avoid divide-by-zero (reported by Todd C Miller).

update to ncurses-5.0-19991127

ncurses-5.0-990821

ncurses-5.0-990703 -- better support for mixing termcap and terminfo/curses routines

ncurses-5.0-990612

ncurses-4.2-990301

Move call to _nc_read_bsd_terminfo_entry() to _nc_read_entry() so reading
terminfo.db is transparent. This requires us to be able to tell which
of the entries in pathvec held the terminfo entry. To make that work
we only pass one pathname to cgetent(3) at a time. This might be a
slight performance hit but should not be noticable in normal use.

ncurses-4.2-990116

Update to ncurses 5.7, with local changes reapplied.

This is around eight years worth of changes (previously we were around ncurses
5.2), too many to list - many bug fixes and also a few new functions.

A major bump for libcurses, libpanel, libform and libmenu.

ok deraadt

Update to ncurses-5.2-20010114

update to ncurses-5.1-20001007

Update to ncurses-5.0-20000304

+ corrected conversion from terminfo rs2 to termcap rs (cf: 980704)
+ make conversion to termcap ug (underline glitch) more consistently applied.
+ modify read_termtype(), fixing 'toe', which could dump core when it
found an incomplete entry such as "dumb" because it did not
initialize its buffer for _nc_read_file_entry().
+ use explicit VALID_NUMERIC() checks in a few places that had been
overlooked, and add a check to ensure that init_tabs is nonzero,
to avoid divide-by-zero (reported by Todd C Miller).

update to ncurses-5.0-19991127

ncurses-5.0-990821

ncurses-5.0-990703 -- better support for mixing termcap and terminfo/curses routines

ncurses-5.0-990612

ncurses-4.2-990301

Move call to _nc_read_bsd_terminfo_entry() to _nc_read_entry() so reading
terminfo.db is transparent. This requires us to be able to tell which
of the entries in pathvec held the terminfo entry. To make that work
we only pass one pathname to cgetent(3) at a time. This might be a
slight performance hit but should not be noticable in normal use.

ncurses-4.2-990116