<kotlinc> ant task now supports <src> element and multiple source directories

compiler/integration-tests/testData/antTaskJvmManyRoots/build.log.expected

@@ -0,0 +1,8 @@
+OUT Buildfile: build.xml
+OUT 
+OUT build:
+OUT   [kotlinc] Compiling [[[TestData]/root1, [TestData]/root2]] => [[Temp]/hello.jar]
+OUT 
+OUT BUILD SUCCESSFUL
+OUT Total time: [time]
+Return code: 0

compiler/integration-tests/testData/antTaskJvmManyRoots/build.xml

@@ -0,0 +1,10 @@
+<project name="Ant Task Test" default="build">
+    <taskdef resource="org/jetbrains/jet/buildtools/ant/antlib.xml" classpath="${kotlin.lib}/kotlin-ant.jar"/>
+
+    <target name="build">
+        <kotlinc output="${temp}/hello.jar">
+          <src path="${test.data}/root1"/>
+          <src path="${test.data}/root2"/>
+        </kotlinc>
+    </target>
+</project>

compiler/integration-tests/testData/antTaskJvmManyRoots/hello.run.expected

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

compiler/integration-tests/testData/antTaskJvmManyRoots/root1/hello.kt

@@ -0,0 +1,7 @@
+package Hello
+
+fun main(args : Array<String>) {
+    for (s in arrayList("a"))
+      println("Hello, $s!")
+    foo()
+}

compiler/integration-tests/testData/antTaskJvmManyRoots/root2/foo.kt

@@ -0,0 +1,3 @@
+package Hello
+
+fun foo() {}