Reorganize integration test data

compiler/integration-tests/testData/ant/js/simpleWithMain/build.log.expected

@@ -0,0 +1,10 @@
+OUT:
+Buildfile: [TestData]/build.xml
+
+build:
+[kotlin2js] Compiling [[TestData]/root1] => [[Temp]/out.js]
+
+BUILD SUCCESSFUL
+Total time: [time]
+
+Return code: 0

compiler/integration-tests/testData/ant/js/simpleWithMain/build.xml

@@ -0,0 +1,7 @@
+<project name="Ant Task Test" default="build">
+  <taskdef resource="org/jetbrains/jet/buildtools/ant/antlib.xml" classpath="${kotlin.lib}/kotlin-ant.jar"/>
+
+  <target name="build">
+    <kotlin2js src="${test.data}/root1" output="${temp}/out.js" main="call"/>
+  </target>
+</project>

compiler/integration-tests/testData/ant/js/simpleWithMain/root1/foo.kt

@@ -0,0 +1,9 @@
+package foo
+
+var ok = "FAIL"
+
+fun main(args: Array<String>) {
+    ok = "OK"
+}
+
+fun box(): String = ok