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-context/src/test/java/example/profilescan/ProfileAnnotatedComponent.java

@@ -0,0 +1,13 @@
+package example.profilescan;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Profile(ProfileAnnotatedComponent.PROFILE_NAME)
+@Component(ProfileAnnotatedComponent.BEAN_NAME)
+public class ProfileAnnotatedComponent {
+
+	public static final String BEAN_NAME = "profileAnnotatedComponent";
+	public static final String PROFILE_NAME = "test";
+
+}