Skip property accessors for constants

- Inline protected constants from Java at use sites
 - Do not create accessors for private constants in Kotlin

 #KT-11734 In Progress

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -34,6 +34,7 @@ enum class LanguageFeature(val sinceVersion: LanguageVersion?) {
     DslMarkersSupport(KOTLIN_1_1),
     UnderscoresInNumericLiterals(KOTLIN_1_1),
     DivisionByZeroInConstantExpressions(KOTLIN_1_1),
+    InlineConstVals(KOTLIN_1_1),
 
     // Experimental features
     MultiPlatformProjects(null),