Provide configurable constructor call normalization

Three modes:

- 'disable' (default): normalize constructor calls in coroutines only
  (required because uninitialized objects can't be stored in fields),
  don't insert additional code for forced class initialization;

- 'enable': normalize constructor calls,
  don't insert additional code for forced class initialization;

- 'preserve-class-initialization': normalize constructor calls,
  insert additional code for forced class initialization.

compiler/frontend.java/src/org/jetbrains/kotlin/config/JVMConfigurationKeys.java

@@ -57,6 +57,8 @@ public class JVMConfigurationKeys {
             CompilerConfigurationKey.create("disable not-null call receiver assertions");
     public static final CompilerConfigurationKey<Boolean> DISABLE_PARAM_ASSERTIONS =
             CompilerConfigurationKey.create("disable not-null parameter assertions");
+    public static final CompilerConfigurationKey<JVMConstructorCallNormalizationMode> CONSTRUCTOR_CALL_NORMALIZATION_MODE =
+            CompilerConfigurationKey.create("constructor call normalization mode");
     public static final CompilerConfigurationKey<Boolean> NO_EXCEPTION_ON_EXPLICIT_EQUALS_FOR_BOXED_NULL =
             CompilerConfigurationKey.create("do not throw NPE on explicit 'equals' call for null receiver of platform boxed primitive type");
     public static final CompilerConfigurationKey<Boolean> DISABLE_OPTIMIZATION =

compiler/frontend.java/src/org/jetbrains/kotlin/config/JVMConstructorCallNormalizationMode.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.config
+
+enum class JVMConstructorCallNormalizationMode(
+        val description: String,
+        val isEnabled: Boolean,
+        val shouldPreserveClassInitialization: Boolean
+) {
+    DISABLE("disable", false, false),
+    ENABLE("enable", true, false),
+    PRESERVE_CLASS_INITIALIZATION("preserve-class-initialization", true, true)
+    ;
+
+    companion object {
+        @JvmField
+        val DEFAULT = DISABLE
+
+        @JvmStatic
+        fun fromStringOrNull(string: String?) = values().find { it.description == string }
+    }
+}