ant task fixes + first integration test

compiler/integration-tests/data/antTaskJvm/build.log.expected

@@ -0,0 +1,10 @@
+OUT Buildfile: build.xml
+OUT 
+OUT build:
+OUT   [kotlinc] Compiling [[TestData]\hello.kt] => [[Temp]\hello.jar]
+OUT   [kotlinc] LOGGING: For source: [TestData]\hello.kt
+OUT   [kotlinc] LOGGING: Emitting: Hello/namespace.class
+OUT 
+OUT BUILD SUCCESSFUL
+OUT Total time: 2 seconds
+Return code: 0

compiler/integration-tests/data/antTaskJvm/build.xml

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

compiler/integration-tests/data/antTaskJvm/hello.kt

@@ -0,0 +1,5 @@
+package Hello
+
+fun main(args : Array<String>) {
+    System.out?.println("Hello!")
+}

compiler/integration-tests/data/antTaskJvm/hello.run.expected

@@ -0,0 +1,2 @@
+OUT Hello!
+Return code: 0