Add externalAnnotations ant test and ant-1.8

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

@@ -1,4 +1,4 @@
-OUT Buildfile: build.xml
+OUT Buildfile: [TestData]/build.xml
 OUT 
 OUT build:
 OUT     [mkdir] Created dir: [Temp]/classes

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

@@ -1,10 +1,15 @@
 <project name="Ant Task Test" default="build">
 
-    <target name="build">
+  <path id="classpath">
+    <fileset dir="${kotlin.home}" includes="kotlin-runtime.jar"/>
+  </path>
+
+  <target name="build">
         <delete dir="${temp}/classes" failonerror="false"/>
         <mkdir dir="${temp}/classes"/>
-        <javac destdir="${temp}/classes" compiler="org.jetbrains.jet.buildtools.ant.KotlinCompilerAdapter">
+        <javac destdir="${temp}/classes" includeantruntime="false" compiler="org.jetbrains.jet.buildtools.ant.KotlinCompilerAdapter">
           <src path="${test.data}/root1"/>
+          <classpath refid="classpath"/>
         </javac>
         <jar destfile="${temp}/hello.jar">
           <fileset dir="${temp}/classes"/>