+ corrected a case where $with_gpm was set to "maybe" after CF_WITH_GPM,
overlooked in 20160528 fixes (report by Alexandre Bury).
+ improve a couple of test-program's help-messages.
+ corrected loop in rain.c from 20170415 changes.
+ modify winnstr and winchnstr to return error if the output pointer is
null, as well as adding a null pointer check of the window pointer
for better compatibility with other implementations.
+ improve discussion of NetBSD curses in scr_dump.5
+ modify LIMIT_TYPED macro in new_pair.h to avoid changing sign of the
value to be limited (reports by Darby Payne, Rob Boudreau).
+ update config.guess, config.sub from
http://git.savannah.gnu.org/cgit/config.git
+ modify several test programs to use new popup_msgs, adapted from
help-screen used in test/edit_field.c
+ drop two symbols obsoleted in 2004: _nc_check_termtype, and
_nc_resolve_uses
+ fix some old copyright dates (cf: 20031025).
+ build-fixes for test/savescreen.c to work with AIX and HPUX.
+ minor fix to configure script, adding a backslash/continuation.
+ extend TERMINAL structure for ABI 6 to store numbers internally as
integers rather than short, by adding new data for this purpose.
+ more fixes for minor memory-leaks in test-programs.
+ minor fixes for vt100+4bsd, e.g., delay in sgr for consistency -TD
+ add smso for env230, to match sgr -TD
+ remove p7/protect from sgr in fbterm -TD
+ drop setf/setb from fbterm; setaf/setab are enough -TD
+ make xterm-pcolor sgr consistent with other capabilities -TD
+ add rmxx/smxx ECMA-48 strikeout extension to tmux and xterm-basic
(discussion with Nicholas Marriott)
+ add test-programs sp_tinfo and extended_color
+ modify no-leaks code for lib_cur_term.c to account for the tgetent()
cache.
+ modify setupterm() to save original tty-modes so that erasechar()
works as expected. Also modify _nc_setupscreen() to avoid redundant
calls to get original tty-modes.
+ modify set_curterm() to update ttytype[] data used by longname().
+ modify wattr_set() and wattr_get() to return ERR if win-parameter is
null, as documented.
+ improve cast used for null-pointer checks in header macros, to
reduce compiler warnings.
+ modify several functions, using the reserved "opts" parameter to pass
color- and pair-values larger than 16-bits:
+ getcchar(), setcchar(), slk_attr_set(), vid_puts(), wattr_get(),
wattr_set(), wchgat(), wcolor_set().
+ Other functions call these with the corresponding altered behavior,
including chgat(), mvchgat(), mvwchgat(), slk_color_on(),
slk_color_off(), vid_attr().
+ add new functions for manipulating color- and pair-values larger
than 16-bits. These are extended_color_content(),
extended_pair_content(), extended_slk_color(), init_extended_color(),
init_extended_pair(), and the corresponding sp-funcs.
+ modify vt100 rs2 string to reset vt52 mode and scrolling regions
(report/analysis by Robert King) -TD
+ add vt100+4bsd building block, use that for older terminals rather
than "vt100" which is now mostly used as a building block for
terminal emulators -TD
+ correct a few spelling errors in terminfo.src comments -TD
+ add fbterm -TD
+ fix a typo in ncurses.c test_attr legend (patch by Petr Vanek).
+ changed internal colorpair_t to a struct, eliminating an internal
8-bit limit on colors
+ add ncurses/new_pair.h
+ add ncurses/base/new_pair.c with alloc_pair(), find_pair() and
free_pair() functions
+ add test/demo_new_pair.c
