[JS_IR] Use new plugin to build Kotlin/JS stdlib with IR compiler

- Switch to building stdlib with bootstrap compiler since IR is stable
  enough
- Build stdlib with coreLibs by default
- Include JS IR stdlib to kotlin distribution

plugins/scripting/scripting-compiler/src/org/jetbrains/kotlin/scripting/compiler/plugin/JsScriptEvaluationExtension.kt

@@ -31,7 +31,7 @@ import kotlin.script.experimental.jvm.JsDependency
 fun loadScriptConfiguration(configuration: CompilerConfiguration) {
     val scriptConfiguration = ScriptCompilationConfiguration {
         baseClass("kotlin.Any")
-        dependencies.append(JsDependency("libraries/stdlib/js-ir/build/fullRuntime/klib"))
+        dependencies.append(JsDependency("libraries/stdlib/js-ir/build/classes/kotlin/js/main/"))
         platform.put("JS")
     }
     configuration.add(

plugins/scripting/scripting-compiler/src/org/jetbrains/kotlin/scripting/repl/js/JsReplUtils.kt

@@ -149,7 +149,7 @@ fun createCompileResult(lineId: LineId, code: String): ReplCompileResult.Compile
 
 class DependencyLoader {
     // TODO: this should be taken from CompilerConfiguration
-    private val commonPath = "libraries/stdlib/js-ir/build/fullRuntime/klib"
+    private val commonPath = "libraries/stdlib/js-ir/build/classes/kotlin/js/main/"
     private val mappedNamesPath = "$commonPath/mappedNames.txt"
     private val scriptDependencyBinaryPath = "$commonPath/scriptDependencyBinary.js"