Add debugName to ModuleMapping

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/incremental/IncrementalPackageFragmentProvider.kt

@@ -90,7 +90,7 @@ class IncrementalPackageFragmentProvider(
                 MemberScope.Empty
             }
             else {
-                val moduleMapping = incrementalCache.getModuleMappingData()?.let { ModuleMapping.create(it) }
+                val moduleMapping = incrementalCache.getModuleMappingData()?.let { ModuleMapping.create(it, "<incremental>") }
 
                 val actualPackagePartFiles =
                         moduleMapping?.findPackageParts(fqName.asString())?.let {

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/incremental/IncrementalPackagePartProvider.kt

@@ -28,7 +28,11 @@ internal class IncrementalPackagePartProvider private constructor(
         incrementalCaches: List<IncrementalCache>,
         storageManager: StorageManager
 ) : PackagePartProvider {
-    private val moduleMappings = storageManager.createLazyValue { incrementalCaches.map { ModuleMapping.create(it.getModuleMappingData()) } }
+    private val moduleMappings = storageManager.createLazyValue {
+        incrementalCaches.map { cache ->
+            ModuleMapping.create(cache.getModuleMappingData(), "<incremental>")
+        }
+    }
 
     override fun findPackageParts(packageFqName: String): List<String> {
         return (moduleMappings().mapNotNull { it.findPackageParts(packageFqName) }.flatMap { it.parts } +