+20181208
+ + modify wbkgd() and wbkgrnd() to improve compatibility with SVr4
+ curses, changing the way the window rendition is updated when the
+ background character is modified (report by Valery Ushakov).
+
+20181201
+ + add midnightbsd to CF_XOPEN_SOURCE macro (patch by Urs Jansen).
+ + add "@" command to test/ncurses F-test, to allow rapid jump to
+ different character pages.
+ + update config.guess, config.sub from
+ http://git.savannah.gnu.org/cgit/config.git
+
+20181125
+ + build-fix (reports by Chih-Hsuan Yen, Sven Joachim).
+