ncurses 6.4 - patch 20231209

ncurses 6.4 - patch 20231209

+ modify infocmp "-u" option to not report cancels in use'd chunks
  which are not mentioned in the top-level terminal description.
+ remove xterm+sm+1006 from tmux (Debian #1057688).
+ used "infocmp -u" to help trim redundant capabilities -TD
+ updated man/edit_man.sh to allow for "\%" markers embedded after
  bold font escapes in manpage cross-references (Debian #1057541).
+ reduce compiler-warnings in configure checks