- Add ncurses patch +20170916
+ minor fix to test/filter.c to avoid clearing the command in one case.
+ modify filter() to discard clr_eos if back_color_erase is set.

- Do not remove ticw.pc as well as tinfow.pc for wide character
ncurses ABI 6 (boo#1056171)

- Add ncurses patch 20170827
+ fix a bug in repeat_char logic (cf: 20170729, report by Chris Clayton).
- Add ncurses patch 20170902
+ amend change for endwin-state for better consistency with the older
logic (report/patch by Jeb Rosen, cf: 20170722).
+ modify check in fmt_entry() to handle a cancelled reset string
(Debian #873746). Make similar fixes in other parts of dump_entry.c
and tput.c
- Add ncurses patch 20170909
+ improve wide-character implementation of myADDNSTR() in frm_driver.c,
which was inconsistent with the normal implementation.
+ save/restore cursor position in Undo_Justification(), matching
behavior of Buffer_To_Window() (report by Leon Winter).
+ modify test/knight to provide the "slow" solution for small screens
using "R", noting that Warnsdorf's method is easily done with "a".
+ modify several test-programs which call use_default_colors() to
consistently do this only if "-d" option is given.
+ additional changes to test with non-standard variants of curses:
+ modify a loop limit in firework.c to work around absense of limit
checks in some libraries.
+ fill the last row of a window with "?" in firstlast if waddch does
not return ERR on the lower-right corner.
+ add checks in test/configure for some functions not in 4.3BSD curses.