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

org.springframework.asm/build.gradle

@@ -0,0 +1,22 @@
+description = 'Spring ASM'
+
+configurations { jarjar }
+dependencies { jarjar 'com.googlecode.jarjar:jarjar:1.1' }
+configurations { asm }
+dependencies { asm 'asm:asm:2.2.3@jar', 'asm:asm-commons:2.2.3@jar' }
+
+jar << {
+    project.ant {
+        taskdef name: "jarjar", classname: "com.tonicsystems.jarjar.JarJarTask", classpath: configurations.jarjar.asPath
+        jarjar(destfile: archivePath, index: "true", filesetmanifest: "merge") {
+            configurations.asm.each { jarfile ->
+                zipfileset(src: jarfile)
+            }
+            rule(pattern: 'org.objectweb.asm.**', result: 'org.springframework.asm.@1')
+        }
+    }
+}
+
+// TODO: integrate bundlor in jarjar routine
+// TODO: create source jar
+// TODO: review overall jarjar approach with Gradle team