Add spring-build 2.2.3 and ensure build succeeds.

spring-build was previously included via an svn:external. Adding
directly to the source tree under Git to avoid the need for a git
submodule.

In order to build from any earlier commit, it is recommended to
export spring-build or symlink an existing copy into the root
of the spring-framework project and then build normally.

$ svn export https://src.springsource.org/svn/spring-build/tags/project-build-2.2.3 spring-build

spring-build/multi-bundle/quality.xml

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project name="quality-multi-bundle" xmlns:ivy="antlib:org.apache.ivy.ant">
+
+	<import file="common.xml"/>
+
+<!-- Main targets -->
+	<target name="test" depends="jar, test.pre, test.do, test.post"
+			description="Executes all tests resulting from a compilation of the test tree returning test success metrics."/>
+
+	<target name="clover" depends="clover.pre, clover.do, clover.post"
+			description="Executes all tests resulting from a compilation of the test tree returning test coverage metrics."/>
+
+	<target name="findbugs" depends="findbugs.pre, findbugs.do"
+			description="Checks all code from the source tree for bugs."/>
+
+<!-- Other targets -->
+	<target name="test.pre">
+		<delete quiet="true" dir="${test-results.output.dir}"/>
+		<mkdir dir="${test-results.output.dir}/xml"/>
+	</target>
+
+	<target name="test.do">
+		<all-bundles target="test.do">
+			<property name="test-results.output.dir" value="${test-results.output.dir}"/>
+		</all-bundles>
+	</target>
+
+	<target name="test.post">
+		<mkdir dir="${test-results.output.dir}/html"/>
+		<junitreport>
+			<fileset dir="${test-results.output.dir}/xml"/>
+			<report format="frames" todir="${test-results.output.dir}/html"/>
+		</junitreport>
+		<delete file="TESTS-TestSuites.xml"/>
+	</target>
+
+	<target name="clover.init" depends="ivy.init">
+		<ivy:cachepath resolveId="clover.classpath" pathid="clover.classpath" organisation="com.atlassian.clover"
+				module="com.springsource.com.cenqua.clover" revision="${com.springsource.com.cenqua.clover.version}"
+				conf="runtime" type="jar" inline="true" log="download-only"/>
+		<taskdef resource="cloverlib.xml" classpathref="clover.classpath"/>
+	</target>
+
+	<target name="clover.pre" depends="clover.init">
+		<delete dir="${clover.output.dir}" quiet="true"/>
+		<mkdir dir="${clover.output.dir}"/>
+	</target>
+
+	<target name="clover.do">
+		<clover-setup initstring="${clover.db.file}"/>
+		<all-bundles target="clover.do">
+			<property name="clover.output.dir" value="${clover.output.dir}"/>
+			<property name="clover.db.file" value="${clover.db.file}"/>
+			<property name="test-results.output.dir" value="${test-results.output.dir}"/>
+		</all-bundles>
+	</target>
+
+	<target name="clover.post" depends="clover.init">
+		<clover-report initstring="${clover.db.file}">
+			<current outfile="${clover.output.dir}/clover.xml" span="30m">
+				<format type="xml"/>
+				<testsources dir="..">
+					<include name="**/src/test/java/**/*.java"/>
+					<include name="**/src/test/java/*.java"/>
+				</testsources>
+			</current>
+		</clover-report>
+		<clover-report initstring="${clover.db.file}">
+			<current outfile="${clover.output.dir}/html" span="30m">
+				<format type="html"/>
+				<testsources dir="..">
+					<include name="**/src/test/java/**/*.java"/>
+					<include name="**/src/test/java/*.java"/>
+				</testsources>
+			</current>
+		</clover-report>
+		<clover-report initstring="${clover.db.file}">
+			<current outfile="${clover.output.dir}/clover.pdf" summary="true" span="30m">
+				<format type="pdf"/>
+				<testsources dir="..">
+					<include name="**/src/test/java/**/*.java"/>
+					<include name="**/src/test/java/*.java"/>
+				</testsources>
+			</current>
+		</clover-report>
+		<clover-check initstring="${clover.db.file}" target="${clover.coverage}" haltOnFailure="${clover.enforce}"
+				span="30m">
+			<testsources dir="..">
+				<include name="**/src/test/java/**/*.java"/>
+				<include name="**/src/test/java/*.java"/>
+			</testsources>
+		</clover-check>
+	</target>
+
+	<target name="findbugs.pre">
+		<delete dir="${findbugs.output.dir}" quiet="true"/>
+		<mkdir dir="${findbugs.output.dir}"/>
+	</target>
+
+	<target name="findbugs.do">
+		<all-bundles target="findbugs.do">
+			<property name="findbugs.output.dir" value="${findbugs.output.dir}"/>
+		</all-bundles>
+	</target>
+
+</project>