* Switch bash, debugger, less, telnet[d] and top apps to use termcap
functionality provided by ncurses lib instead of GNU libtermcap.so;
* NetBSD version of tput utility replaced with ncurses' one. Fixes#9606;
* terminfo database is provided as mandatory package installed during
building target system;
* Remove libtermcap module. The termcap database source and
corresponding build rules are not removed to provide backward compatibility -
until all optional packages will be rebuild on upcoming system version
using terminfo. Note that gcc2 builds may require to provide termcap a bit
longer in the sake of binary compatibility with R5 era apps.
