+20220305
+ + replace obsolescent "-gnatg" option with "-gnatwa" and "-gnatyg", to
+ work around build problems with gnat 12.
+ + update external links in Ada95.html
+ + trim unused return-value from canonical_name().
+
+20220226
+ + fix issues found with coverity:
+ + rewrite canonical_name() function of infocmp to ensure buffer size
+ + corrected use of original tty-modes in tput init/reset subcommands
+ + modify tabs program to limit tab-stop values to max-columns
+ + add limit-checks for palette rgb values in test/ncurses.c
+ + add a few null-pointer checks to help with static-analysis.
+ + enforce limit on number of soft-keys used in c++ binding.
+ + adjust a buffer-limit in write_entry.c to quiet a bogus warning from
+ gcc 12.0.1
+