[cinterop] Minor refactoring

Get rid of unneeded `LibraryCreationArguments` class and
allow adding multiple bitcode files.

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/InteropLibraryCreation.kt

@@ -24,18 +24,16 @@ import org.jetbrains.kotlin.library.impl.BuiltInsPlatform
 import org.jetbrains.kotlin.util.removeSuffixIfPresent
 import java.util.*
 
-data class LibraryCreationArguments(
-        val metadata: KlibModuleMetadata,
-        val outputPath: String,
-        val moduleName: String,
-        val nativeBitcodePath: String,
-        val target: KonanTarget,
-        val manifest: Properties,
-        val dependencies: List<KotlinLibrary>,
-        val nopack: Boolean
-)
-
-fun createInteropLibrary(arguments: LibraryCreationArguments) {
+fun createInteropLibrary(
+        metadata: KlibModuleMetadata,
+        outputPath: String,
+        moduleName: String,
+        nativeBitcodeFiles: List<String>,
+        target: KonanTarget,
+        manifest: Properties,
+        dependencies: List<KotlinLibrary>,
+        nopack: Boolean
+) {
     val version = KotlinLibraryVersioning(
             libraryVersion = null,
             abiVersion = KotlinAbiVersion.CURRENT,
@@ -43,21 +41,21 @@ fun createInteropLibrary(arguments: LibraryCreationArguments) {
             metadataVersion = KlibMetadataVersion.INSTANCE.toString(),
             irVersion = KlibIrVersion.INSTANCE.toString()
     )
-    val outputPathWithoutExtension = arguments.outputPath.removeSuffixIfPresent(".klib")
+    val outputPathWithoutExtension = outputPath.removeSuffixIfPresent(".klib")
     KonanLibraryWriterImpl(
             File(outputPathWithoutExtension),
-            arguments.moduleName,
+            moduleName,
             version,
-            arguments.target,
+            target,
 
             BuiltInsPlatform.NATIVE,
-            nopack = arguments.nopack
+            nopack = nopack
     ).apply {
-        val metadata = arguments.metadata.write(ChunkingWriteStrategy())
+        val metadata = metadata.write(ChunkingWriteStrategy())
         addMetadata(SerializedMetadata(metadata.header, metadata.fragments, metadata.fragmentNames))
-        addNativeBitcode(arguments.nativeBitcodePath)
-        addManifestAddend(arguments.manifest)
-        addLinkDependencies(arguments.dependencies)
+        nativeBitcodeFiles.forEach(this::addNativeBitcode)
+        addManifestAddend(manifest)
+        addLinkDependencies(dependencies)
         commit()
     }
 }

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/main.kt

@@ -334,9 +334,9 @@ private fun processCLib(args: Array<String>, additionalArgs: Map<String, Any> =
             argsToCompiler(staticLibraries, libraryPaths)
         }
         is StubIrDriver.Result.Metadata -> {
-            val args = LibraryCreationArguments(
+            createInteropLibrary(
                     metadata = stubIrOutput.metadata,
-                    nativeBitcodePath = nativeOutputPath,
+                    nativeBitcodeFiles = listOf(nativeOutputPath),
                     target = tool.target,
                     moduleName = moduleName,
                     outputPath = cinteropArguments.output,
@@ -344,7 +344,6 @@ private fun processCLib(args: Array<String>, additionalArgs: Map<String, Any> =
                     dependencies = allLibraryDependencies,
                     nopack = cinteropArguments.nopack
             )
-            createInteropLibrary(args)
             return null
         }
     }