ncurses: Block warning about "older tic versions"

ncurses: Block warning about "older tic versions"

The /etc/termcap file should have a space between the last "|" character and the alias per
format rules.  ncurses can still interpret the alias of the termcap entries correctly, but by
default will emit the warning, "older tic versions may treat the description field as an alias"
whenver it encounters such an entry (e.g. the common cons25).

Rather than update hundreds of entries, just silence the warning.  This is what FreeBSD does.