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-core/src/test/resources/log4j.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
+
+<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
+
+	<!-- Appenders -->
+	<appender name="console" class="org.apache.log4j.ConsoleAppender">
+		<param name="Target" value="System.out" />
+		<layout class="org.apache.log4j.PatternLayout">
+			<param name="ConversionPattern" value="%-5p: %c - %m%n" />
+		</layout>
+	</appender>
+
+	<logger name="org.springframework.core.convert">
+		<level value="warn" />
+	</logger>
+
+	<!-- Root Logger -->
+	<root>
+		<priority value="warn" />
+		<appender-ref ref="console" />
+	</root>
+	
+</log4j:configuration>

spring-core/src/test/resources/org/springframework/util/testlog4j.properties

@@ -0,0 +1,2 @@
+log4j.rootCategory=DEBUG, mock
+log4j.appender.mock=org.springframework.util.MockLog4jAppender

spring-core/src/test/resources/org/springframework/util/xml/testContentHandler.xml

@@ -0,0 +1,2 @@
+<h:hello xmlns:h="http://www.greeting.com/hello/" id="a1" h:person="David"><goodbye
+		xmlns="http://www.greeting.com/goodbye/" h:person="Arjen"/></h:hello>

spring-core/src/test/resources/org/springframework/util/xml/testLexicalHandler.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE element
+		[<!ENTITY entity "entity">]>
+<!--Comment-->
+<element>
+    <cdata><![CDATA[cdata]]></cdata>
+    <entity>&entity;</entity>
+</element>