Does utilities Tack being included by default in 5.7

[yuntong.jin]

Hi List,
With ncurses v5.6 i get  utilities Tack,but not in v5.7 anymore on 
Opensolaris, and in README i see:
The utilities are as follows:

       tic             -- terminfo source to binary compiler
       infocmp         -- terminfo binary to source decompiler/comparator
       clear           -- emits clear-screen for current terminal
       tput            -- shell-script access to terminal capabilities.
       toe             -- table of entries utility
       tset            -- terminal-initialization utility
it also mentioned (The 'tack' program may be distributed separately).

Could someone explain on this?

RR,
simon