Minor, convert CommonConfigurationKeys to Kotlin

Author: udalov

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

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2010-2015 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
+
+object CommonConfigurationKeys {
+    @JvmField
+    val LANGUAGE_VERSION_SETTINGS = CompilerConfigurationKey<LanguageVersionSettings>("language version settings")
+
+    @JvmField
+    val SKIP_METADATA_VERSION_CHECK = CompilerConfigurationKey<Boolean>("skip metadata version check")
+
+    @JvmField
+    val DISABLE_INLINE = CompilerConfigurationKey<Boolean>("disable inline")
+
+    @JvmField
+    val MODULE_NAME = CompilerConfigurationKey<String>("module name")
+}

compiler/frontend/src/org/jetbrains/kotlin/config/CommonConfigurationKeys.kt

@@ -23,10 +23,11 @@
 public class CompilerConfigurationKey<T> {
     Key<T> ideaKey;
 
-    private CompilerConfigurationKey(@NotNull @NonNls String name) {
+    public CompilerConfigurationKey(@NotNull @NonNls String name) {
         ideaKey = Key.create(name);
     }
 
+    @NotNull
     public static <T> CompilerConfigurationKey<T> create(@NotNull @NonNls String name) {
         return new CompilerConfigurationKey<T>(name);
     }