- Disable usage of libbsd as this one is not in bootstrap image

- Add ncurses patch 20201024
+ provide workaround configure-check for bool when cross-compiling.
+ fix a potential indexing error in _nc_parse_entry(), seen with
Herlim's test data using address-sanitizer.
+ change a null-pointer check in set_curterm to a valid-string check,
needed in to tic's use-resolution work pad_char is cancelled
(report/testcase by Robert Sebastian Herlim)
+ improve tic's -c option to validate the number and type of parameters
and compare against expected number/type before deciding which set of
parameter-lists to use in tparm calls (report/testcase by Robert
Sebastian Herlim).
+ fix a link for tabs.1 manpage in announce.html.in (report by Nick
Black), as well as some fixes via linklint.
- Update to tack 1.9 (patch 20200220)
* sysdep.c: gcc-warning
* tack.c: fix gcc warning for non-ncurses configuration
* init.c: zero-out the debug/log-pointers after closing them
* tack.1: add -d option, for debug.log
* output.c: use debug.log to record putp's and tput's which hint at
the testing done
* sysdep.c: use debug.log to record when the tty is set/reset
* tack.h: split-out log_chr and log_str
* tack.c: add -d option, for debug.log
* tack.1, tack.c, tack.h: add -l option
* tack.c: eliminate a confusing comparison for the logging-menu-entry
state by using #define'd strings for that and the hex-output menu.
* tack.c: use getopt
* fun.c, crum.c, edit.c: