Previously all base has been modified to only link against ncursesw.
Meaning non widechar version remains unused onbase.
This changes goes further, and only provide one build of the ncurses library
(the widechar version) and symlinks the w (widechar) version to not break the
Do not change yet all the LIBADD given we want at least a release in that. so
MFCing Makefile with LIBADD= ncursesw does not become a pain.