+20210703
+ + amend libtool configuration to add dependency for install.tic, etc.,
+ in ncurses/Makefile on the lower-level libraries.
+ + modify configure script to support ".PHONY" make program feature.
+
+20210626
+ + add configure option --disable-root-access, which tells ncurses to
+ disallow most file-opens by setuid processes.
+ + use default colors in pccon "op" -TD
+ + correct rmacs/smacs in aaa+dec, aaa+rv -TD
+ + add hpterm-color2 and hp98550-color (Martin Trusler)
+ + regenerate man-html documentation.
+
+20210619
+ + improve configure-macro used for dependencies of --disable-leaks such
+ as --with-valgrind
+ + trim trailing blanks from files
+
+20210612
+ + fixes for scan-build, valgrind build/testing.
+ + update config.guess
+
+20210605
+ + add a summary of ncurses-specific preprocessor symbols to curses.h
+ (prompted by discussion with Peter Farley, Bill Gray).
+
+20210522
+ + regenerate configure scripts with autoconf 2.52.20210509 to eliminate
+ an unnecessary warning in config.log (report by Miroslav Lichvar).
+ + add a note in manual page to explain ungetch vs unget_wch (prompted
+ by discussion with Peter Farley).
+ + add sp-funcs for erasewchar, killwchar.
+ + modify wgetnstr, wgetn_wstr to improve compatibility with SVr4 curses
+ in its treatment of interrupt and quit characters (prompted by
+ report/testcase by Bill Gray)
+ + update config.guess, config.sub
+