Introduce Gradle-based build

 - Use recent Gradle 1.0-milestone-8 snapshot
 - Add initial cut of build.gradle able to compile/test all modules
 - Update .gitignore
 - Generate Gradle wrapper scripts
 - Remove all Eclipse metadata files
 - Temporarily @ignore tests that do not pass under Gradle

.gitignore

@@ -10,9 +10,16 @@ integration-repo
 ivy-cache
 jxl.log
 jmx.log
-org.springframework.jdbc/derby.log
-org.springframework.spring-parent/.classpath
-org.springframework.spring-parent/.project
-org.springframework.test/test-output/
-target
-spring-build/lib/docbook
+spring-jdbc/derby.log
+spring-test/test-output/
+.gradle
+build
+.classpath
+.project
+argfile*
+
+# IDEA metadata and output dirs
+*.iml
+*.ipr
+*.iws
+out

.wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Fri Jan 13 16:50:40 CET 2012
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://repo.gradle.org/gradle/distributions-snapshots/gradle-1.0-milestone-8-20120112000036+0100-bin.zip