Don't touch dependencies when serializing the module

Otherwise dependencies would seem as needed.

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/serialization/KonanSerializationUtil.kt

@@ -36,6 +36,7 @@ import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.CompilerDeserializationConfiguration
 import org.jetbrains.kotlin.resolve.DescriptorUtils
+import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.serialization.KonanDescriptorSerializer
@@ -194,23 +195,21 @@ internal class KonanSerializationUtil(val context: Context) {
     fun serializePackage(fqName: FqName, module: ModuleDescriptor) : 
         KonanLinkData.PackageFragment? {
 
-        val packageView = module.getPackage(fqName)
-
-        // TODO: ModuleDescriptor should be able to return 
+        // TODO: ModuleDescriptor should be able to return
         // the package only with the contents of that module, without dependencies
-        val keep: (DeclarationDescriptor) -> Boolean = 
-            { DescriptorUtils.getContainingModule(it) == module }
 
-        val fragments = packageView.fragments
-        if (fragments.filter(keep).isEmpty()) return null
+        val fragments = module.getPackage(fqName).fragments.filter { it.module == module }
+        if (fragments.isEmpty()) return null
 
-        val classifierDescriptors = KonanDescriptorSerializer
-            .sort(packageView.memberScope.getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS))
-            .filter(keep)
+        val classifierDescriptors = KonanDescriptorSerializer.sort(
+                fragments.flatMap {
+                    it.getMemberScope().getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS)
+                }
+        )
 
-        val members = fragments
-                .flatMap { fragment -> DescriptorUtils.getAllDescriptors(fragment.getMemberScope()) }
-                .filter(keep)
+        val members = fragments.flatMap { fragment ->
+            DescriptorUtils.getAllDescriptors(fragment.getMemberScope())
+        }
 
         val classesBuilder = KonanLinkData.Classes.newBuilder()
 
@@ -239,22 +238,15 @@ internal class KonanSerializationUtil(val context: Context) {
     }
 
     private fun getPackagesFqNames(module: ModuleDescriptor): Set<FqName> {
-        val fqNames = mutableSetOf<FqName>(FqName.ROOT)
-        getSubPackagesFqNames(module.getPackage(FqName.ROOT), fqNames)
-        return fqNames
-    }
-    private fun getSubPackagesFqNames(packageView: PackageViewDescriptor, result: MutableSet<FqName>) {
-        val fqName = packageView.fqName
-        if (!fqName.isRoot) {
+        val result = mutableSetOf<FqName>()
+
+        fun getSubPackages(fqName: FqName) {
             result.add(fqName)
+            module.getSubPackagesOf(fqName) { true }.forEach { getSubPackages(it) }
         }
 
-        for (descriptor in packageView.memberScope.getContributedDescriptors(
-                DescriptorKindFilter.PACKAGES, MemberScope.ALL_NAME_FILTER)) {
-            if (descriptor is PackageViewDescriptor) {
-                getSubPackagesFqNames(descriptor, result)
-            }
-        }
+        getSubPackages(FqName.ROOT)
+        return result
     }
 
     internal fun serializeModule(moduleDescriptor: ModuleDescriptor): LinkData {