Make copy_binaries compatible with lddtree from pax-utils-0.6

On some system the output from the new lddtree does not match with what
genkernel expects, however lddtree have insted gained a new option that
essentially gives what we want with less code.

Signed-off-by: Peter Hjalmarsson <xake@rymdraket.net>

gen_initramfs.sh

@@ -33,13 +33,22 @@ copy_binaries() {
 		fi
 	done
 	# This must be OUTSIDE the for loop, we only want to run lddtree etc ONCE.
-	lddtree "$@" \
+	# lddtree does not have the -V (version) nor the -l (list) options prior to version 1.18
+	if lddtree -V > /dev/null 2>&1 ; then
+		lddtree -l "$@" \
+			| sort \
+			| uniq \
+			| cpio -p --make-directories --dereference --quiet "${destdir}" \
+			|| gen_die "Binary ${f} or some of its library dependencies could not be copied"
+	else
+		lddtree "$@" \
 			| tr ')(' '\n' \
 			| awk  '/=>/{ if($3 ~ /^\//){print $3}}' \
 			| sort \
 			| uniq \
 			| cpio -p --make-directories --dereference --quiet "${destdir}" \
 			|| gen_die "Binary ${f} or some of its library dependencies could not be copied"
+	fi
 }
 
 log_future_cpio_content() {