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.

compiler/tests-common/org/jetbrains/kotlin/codegen/forTestCompile/ForTestCompileRuntime.java

@@ -65,7 +65,7 @@ public class ForTestCompileRuntime {
     @NotNull
     @Deprecated
     public static File[] runtimeClassesForTests() {
-        return new File[] { assertExists(new File("dist/builtins")), assertExists(new File("dist/classes/builtins")), assertExists(new File("dist/classes/stdlib")) };
+        return new File[] { assertExists(new File("dist/builtins")), assertExists(new File("libraries/stdlib/build/classes/builtins")), assertExists(new File("libraries/stdlib/build/classes/main")) };
     }
 
     @NotNull