Rename modules {org.springframework.*=>spring-*}

This renaming more intuitively expresses the relationship between
subprojects and the JAR artifacts they produce.

Tracking history across these renames is possible, but it requires
use of the --follow flag to `git log`, for example

    $ git log spring-aop/src/main/java/org/springframework/aop/Advisor.java

will show history up until the renaming event, where

    $ git log --follow spring-aop/src/main/java/org/springframework/aop/Advisor.java

will show history for all changes to the file, before and after the
renaming.

See http://chrisbeams.com/git-diff-across-renamed-directories

spring-aop/src/test/java/test/beans/Colour.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package test.beans;
+
+import org.springframework.core.enums.ShortCodedLabeledEnum;
+
+/**
+ * @author Rob Harrop
+ */
+@SuppressWarnings("serial")
+public class Colour extends ShortCodedLabeledEnum {
+
+	public static final Colour RED = new Colour(0, "RED");
+	public static final Colour BLUE = new Colour(1, "BLUE");
+	public static final Colour GREEN = new Colour(2, "GREEN");
+	public static final Colour PURPLE = new Colour(3, "PURPLE");
+
+	private Colour(int code, String label) {
+		super(code, label);
+	}
+
+}