add isMoveSmall()
#	new file:   DragGridView/res/values/demins.xml
#	modified:   DragGridView/src/com/example/draggridview/DragGridView.java
精简代码  setChildVisible();
#	new file:   DragGridView/.settings/org.eclipse.core.resources.prefs
#	modified:   DragGridView/src/com/example/draggridview/DragGridView.java