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.

idea/tests/org/jetbrains/kotlin/idea/highlighter/NoErrorsInStdlibTest.kt

@@ -66,7 +66,7 @@ class NoErrorsInStdlibTest : KotlinLightCodeInsightFixtureTestCase() {
     }
 
     override fun getProjectDescriptor(): LightProjectDescriptor {
-        return object : KotlinJdkAndLibraryProjectDescriptor(File("dist/classes/builtins")) {
+        return object : KotlinJdkAndLibraryProjectDescriptor(File("libraries/stdlib/build/classes/builtins")) {
             override fun getSdk(): Sdk? = PluginTestCaseBase.fullJdk()
         }
     }