tested and fixed onFailure for FtpSource

org.springframework.integration/src/main/java/org/springframework/integration/util/CollectionSplitter.java

@@ -0,0 +1,22 @@
+package org.springframework.integration.util;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.springframework.integration.annotation.Splitter;
+import org.springframework.integration.message.GenericMessage;
+import org.springframework.integration.message.Message;
+
+public class CollectionSplitter {
+
+	@SuppressWarnings("unchecked")
+	@Splitter
+	public final List<Message> split(Message message) {
+		List<Message> splitMessages = new ArrayList<Message>();
+		for (Object payload : ((Collection) message.getPayload())) {
+			splitMessages.add(new GenericMessage(payload));
+		}
+		return splitMessages;
+	}
+}