+20210710
+ + improve history section for tset manpage based on the 1BSD tarball,
+ which preceded BSD's SCCS checkins by more than three years.
+ + improve CF_XOPEN_CURSES macro used in test/configure (report by Urs
+ Jansen).
+ + further improvement of libtool configuration, adding a dependency of
+ the install.tic rule, etc., on the library in the build-tree.
+ + update config.sub
+
+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).
+