configure: check for ncurses libs + headers in one go

./configure now has the possibility to check for libraries and headers
in one go, so we can use it! :-)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 reporter_name="Nye Liu"

 reporter_url="http://sourceware.org/ml/crossgcc/2008-10/msg00046.html"

 reporter_comment=""