Add 'constructor' keyword in whole project where needed

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/MemberSignature.kt

@@ -21,7 +21,7 @@ import org.jetbrains.kotlin.name.Name
 
 // The purpose of this class is to hold a unique signature of either a method or a field, so that annotations on a member can be put
 // into a map indexed by these signatures
-data class MemberSignature private(private val signature: String) {
+data class MemberSignature private constructor(private val signature: String) {
     companion object {
         platformStatic public fun fromMethodNameAndDesc(nameAndDesc: String): MemberSignature {
             return MemberSignature(nameAndDesc)

core/descriptors.runtime/src/org/jetbrains/kotlin/load/kotlin/reflect/ReflectKotlinClass.kt

@@ -39,7 +39,7 @@ private val TYPES_ELIGIBLE_FOR_SIMPLE_VISIT = setOf(
         javaClass<Class<*>>(), javaClass<String>()
 )
 
-public class ReflectKotlinClass private(
+public class ReflectKotlinClass private constructor(
         private val klass: Class<*>,
         private val classHeader: KotlinClassHeader
 ) : KotlinJvmBinaryClass {

core/descriptors.runtime/src/org/jetbrains/kotlin/load/kotlin/reflect/RuntimeModuleData.kt

@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.platform.JavaToKotlinClassMap
 import org.jetbrains.kotlin.serialization.deserialization.LocalClassResolver
 import org.jetbrains.kotlin.storage.LockBasedStorageManager
 
-public class RuntimeModuleData private(private val injector: InjectorForRuntimeDescriptorLoader) {
+public class RuntimeModuleData private constructor(private val injector: InjectorForRuntimeDescriptorLoader) {
     public val module: ModuleDescriptor get() = injector.getModuleDescriptor()
 
     public val localClassResolver: LocalClassResolver get() = injector.getDeserializationComponentsForJava().components.localClassResolver

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedMemberScope.kt

@@ -28,7 +28,7 @@ import org.jetbrains.kotlin.serialization.ProtoBuf.Callable.CallableKind
 import org.jetbrains.kotlin.serialization.deserialization.DeserializationContext
 import java.util.*
 
-public abstract class DeserializedMemberScope protected(
+public abstract class DeserializedMemberScope protected constructor(
         protected val c: DeserializationContext,
         membersList: Collection<ProtoBuf.Callable>
 ) : JetScope {

core/reflection.jvm/src/kotlin/reflect/jvm/internal/DescriptorBasedProperty.kt

@@ -27,7 +27,7 @@ import org.jetbrains.kotlin.serialization.jvm.JvmProtoBuf
 import java.lang.reflect.Field
 import java.lang.reflect.Method
 
-abstract class DescriptorBasedProperty private(
+abstract class DescriptorBasedProperty private constructor(
         container: KCallableContainerImpl,
         name: String,
         receiverParameterDesc: String?,