[BT] Implement incremental compilation within the daemon

#KT-57398 In Progress

compiler/daemon/daemon-common/src/org/jetbrains/kotlin/daemon/common/CompilationOptions.kt

@@ -67,7 +67,7 @@ class IncrementalCompilationOptions(
     /**
      * Directories that should be cleared when IC decides to rebuild
      */
-    val outputFiles: List<File>,
+    val outputFiles: Collection<File>? = null,
     val multiModuleICSettings: MultiModuleICSettings? = null,
     val modulesInfo: IncrementalModuleInfo? = null,
     /**
@@ -87,7 +87,7 @@ class IncrementalCompilationOptions(
     kotlinScriptExtensions
 ) {
     companion object {
-        const val serialVersionUID: Long = 2
+        const val serialVersionUID: Long = 3
     }
 
     override fun toString(): String {