scripts/xldd: fix pattern matching with new binutils

New binutils (circa 2.2x?) append 'program interpreter' to the
(NEEDED) line for the dynamic linker, which breaks our current
pattern.

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

 #!/bin/sh

 set -e

 printf "Running autoconf...\n"

 autoconf -Wall --force

 printf "Done. You may now run:\n    ./configure\n"