move_pages: Fix and support some specs for LTP.

1. When nodes array is NULL, move_pages doesn't move any pages,
 instead will return the node where each page
 currently resides by status array.
2. Check whether all specified node is online or not.

Change-Id: Ie3534997833d797e2a9f595d1107b07d46e1c6cf
Refs: #1523

test/issues/1523/C1523.sh

@@ -0,0 +1,30 @@
+#/bin/sh
+
+USELTP=1
+USEOSTEST=0
+
+MCREBOOT=0
+. ../../common.sh
+
+BOOTPARAM="${BOOTPARAM} -e anon_on_demand"
+mcreboot
+
+issue="1523"
+tid=01
+
+for tp in move_pages01 move_pages02 move_pages04 move_pages06 move_pages09 move_pages10
+do
+	tname=`printf "C${issue}T%02d" ${tid}`
+	echo "*** ${tname} start *******************************"
+	sudo $MCEXEC $LTPBIN/$tp 2>&1 | tee $tp.txt
+	ok=`grep PASS $tp.txt | wc -l`
+	ng=`grep FAIL $tp.txt | wc -l`
+	if [ $ng = 0 ]; then
+		echo "*** ${tname} PASSED ($ok)"
+	else
+		echo "*** ${tname} FAILED (ok=$ok ng=$ng)"
+	fi
+	let tid++
+	echo ""
+done
+