ncurses: move only libncurses and libtinfo to base_libdir

ncurses: move only libncurses and libtinfo to base_libdir

The previous approach to moving the ncurses libraries to
base_libdir was too aggressive, and it broke curses support
in python.

Instead, move only libncurses, libncursesw, and libtinfo to
base_libdir and leave the remaining libraries in libdir.

Also delete ${libdir}/terminfo as it never gets packaged to
avoid a QA warning.

This fixes [YOCTO #2070] and is a partial fix for [YOCTO #1937].

Signed-off-by: Scott Garman <scott.a.garman@intel.com>