Fix annotations docs for kotlin.test

libraries/build-docs.xml

@@ -47,6 +47,7 @@
     </path>
     <path id="kotlin-test.compile.classpath">
         <fileset dir="${basedir}/stdlib/build/libs/" includes="dist-kotlin-stdlib.jar"/>
+        <pathelement location="${basedir}/lib/junit-4.11.jar"/>
     </path>
     <target name="document" depends="clean,preprocess-js-common-and-compile-builtins">
         <dokka samples="stdlib/samples/test" outputDir="${docs.output}/jre8" moduleName="kotlin-stdlib" skipDeprecated="true" outputFormat="${dokka.format}" jdkversion="8" impliedplatforms="JVM,JS"
@@ -89,10 +90,12 @@
 
             <sourceRoot path="kotlin.test/common/src/main/kotlin" platforms="JVM,JS"/>
             <sourceRoot path="kotlin.test/jvm/src/main/kotlin" platforms="JVM"/>
+            <sourceRoot path="kotlin.test/junit/src/main/kotlin" platforms="JVM"/>
             <sourceRoot path="kotlin.test/js/src/main/kotlin" platforms="JS"/>
 
             <sourcelink path=".." url="http://github.com/JetBrains/kotlin/blob/${github.revision}" linesuffix="#L"/>
             <ExternalDocumentationLink url="https://kotlinlang.org/api/latest/jvm/stdlib/" packageListUrl="${stdlib.package.list}" />
+            <ExternalDocumentationLink url="http://junit.org/junit4/javadoc/latest/" />
         </dokka>
     </target>