[K/N] Internalize functions for throwing specific exception from C++ code

As a part of efforts to stabilize Native stdlib.

kotlin-native/runtime/src/main/kotlin/kotlin/native/internal/RuntimeUtils.kt

@@ -11,7 +11,8 @@ import kotlin.native.concurrent.FreezableAtomicReference
 import kotlin.native.concurrent.freeze
 
 @ExportForCppRuntime
-fun ThrowNullPointerException(): Nothing {
+@PublishedApi
+internal fun ThrowNullPointerException(): Nothing {
     throw NullPointerException()
 }
 
@@ -26,23 +27,27 @@ internal fun ThrowArrayIndexOutOfBoundsException(): Nothing {
 }
 
 @ExportForCppRuntime
-fun ThrowClassCastException(instance: Any, typeInfo: NativePtr): Nothing {
+@PublishedApi
+internal fun ThrowClassCastException(instance: Any, typeInfo: NativePtr): Nothing {
     val clazz = KClassImpl<Any>(typeInfo)
     throw ClassCastException("${instance::class} cannot be cast to $clazz")
 }
 
 @ExportForCppRuntime
-fun ThrowTypeCastException(instance: Any, typeName: String): Nothing {
+@PublishedApi
+internal fun ThrowTypeCastException(instance: Any, typeName: String): Nothing {
     throw TypeCastException("${instance::class} cannot be cast to class $typeName")
 }
 
 @ExportForCppRuntime
-fun ThrowKotlinNothingValueException(): Nothing {
+@PublishedApi
+internal fun ThrowKotlinNothingValueException(): Nothing {
     throw KotlinNothingValueException()
 }
 
 @ExportForCppRuntime
-fun ThrowInvalidReceiverTypeException(klass: KClass<*>): Nothing {
+@PublishedApi
+internal fun ThrowInvalidReceiverTypeException(klass: KClass<*>): Nothing {
     throw RuntimeException("Unexpected receiver type: " + (klass.qualifiedName ?: "noname"))
 }
 
@@ -61,11 +66,13 @@ internal fun ThrowOutOfMemoryError() : Nothing {
     throw OutOfMemoryError()
 }
 
-fun ThrowNoWhenBranchMatchedException(): Nothing {
+@PublishedApi
+internal fun ThrowNoWhenBranchMatchedException(): Nothing {
     throw NoWhenBranchMatchedException()
 }
 
-fun ThrowUninitializedPropertyAccessException(propertyName: String): Nothing {
+@PublishedApi
+internal fun ThrowUninitializedPropertyAccessException(propertyName: String): Nothing {
     throw UninitializedPropertyAccessException("lateinit property $propertyName has not been initialized")
 }