patch: fix nano, switch to widechar ncurses

[Nils O. F. <nil...@mi...>]

make libncursesw.so instead of libncurses.so

nano seems to suck in libncursesw devel files from the compiling host
as it really prefers the widechar variant.

As for now nano is the only app that uses ncurses.
If we add a package that needs libncurses in the future, we can probably just 
symlink to  libncursesw.*

Not as tested as I would like, but it seems to be the right ting to do :-)