Introduce JvmBuiltIns and DefaultBuiltIns, different instances of KotlinBuiltIns

Make KotlinBuiltIns an abstract class
JsPlatform has DefaultBuiltIns

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatform.kt

@@ -16,8 +16,10 @@
 
 package org.jetbrains.kotlin.resolve.jvm.platform
 
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.ModuleParameters
 import org.jetbrains.kotlin.platform.JavaToKotlinClassMap
+import org.jetbrains.kotlin.platform.JvmBuiltIns
 import org.jetbrains.kotlin.platform.PlatformToKotlinClassMap
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.ImportPath
@@ -35,6 +37,9 @@ public object JvmPlatform : TargetPlatform("JVM") {
             get() = DEFAULT_IMPORTS_FOR_JVM
     }
 
+    override val builtIns: KotlinBuiltIns
+        get() = JvmBuiltIns.Instance
+
     override val platformConfigurator: PlatformConfigurator = JvmPlatformConfigurator
 }