Setup dist task to assemble libs for compiler distribution.

Produce special stdlib artifact with annotations for dist.
Put js outputs to dist, they're required for JS backend tests.

Use kotlin-compiler for maven, which has all required dependencies bundled.
Clean local directory repository on clean.

Change paths in tests to compiled artifacts.

libraries/kotlin.test/js/build.gradle

@@ -41,3 +41,10 @@ artifacts {
     archives sourcesJar
     archives javadocJar
 }
+
+dist {
+    from (jar, sourcesJar)
+    from(compileKotlin2Js.kotlinOptions.outputFile) {
+        into '../../js'
+    }
+}

libraries/kotlin.test/junit/build.gradle

@@ -21,6 +21,10 @@ artifacts {
     archives javadocJar
 }
 
+dist {
+    from (jar, sourcesJar)
+}
+
 compileKotlin {
     kotlinOptions.freeCompilerArgs = ["-Xallow-kotlin-package", "-module-name", project.name]
 }

libraries/kotlin.test/jvm/build.gradle

@@ -24,6 +24,10 @@ artifacts {
     archives javadocJar
 }
 
+dist {
+    from (jar, sourcesJar)
+}
+
 compileKotlin {
     // TODO: Why "-Xmulti-platfrom" ?
     kotlinOptions.freeCompilerArgs = ["-Xallow-kotlin-package", "-Xmulti-platform", "-module-name", project.archivesBaseName]