Write module name to metadata, fix reflection for file facades

Module name will be used for proper introspection of internal members

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

@@ -29,11 +29,9 @@ import kotlin.reflect.KPackage
 
 internal class KPackageImpl(override val jClass: Class<*>, val moduleName: String) : KDeclarationContainerImpl(), KPackage {
     val descriptor by ReflectProperties.lazySoft {
-        val moduleData = jClass.getOrCreateModule()
+        val moduleData = moduleData
         moduleData.packageFacadeProvider.registerModule(moduleName)
-        val fqName = jClass.classId.getPackageFqName()
-
-        moduleData.module.getPackage(fqName)
+        moduleData.module.getPackage(jClass.classId.packageFqName)
     }
 
     internal val scope: JetScope get() = descriptor.memberScope

core/reflection.jvm/src/kotlin/reflect/jvm/mapping.kt

@@ -103,7 +103,13 @@ public val Method.kotlinFunction: KFunction<*>?
         if (isSynthetic) return null
 
         if (Modifier.isStatic(modifiers)) {
-            // TODO: support file facades & multifile classes
+            // TODO: support multifile classes
+
+            val fileFacade = declaringClass.getAnnotation(KotlinFileFacade::class.java)
+            if (fileFacade != null) {
+                val kotlinPackage = Reflection.getOrCreateKotlinPackage(declaringClass, fileFacade.moduleName)
+                return kotlinPackage.functions.firstOrNull { it.javaMethod == this }
+            }
 
             // For static bridge method generated for a jvmStatic function in the companion object, also try to find the latter
             val companion = declaringClass.kotlin.companionObject