Sort source to output mapping before writing to caches

#KT-32902 Fixed

build-common/src/org/jetbrains/kotlin/build/generatedFiles.kt

@@ -22,9 +22,11 @@ import org.jetbrains.kotlin.utils.sure
 import java.io.File
 
 open class GeneratedFile(
-    val sourceFiles: Collection<File>,
+    sourceFiles: Collection<File>,
     val outputFile: File
-)
+) {
+    val sourceFiles = sourceFiles.sortedBy { it.path }
+}
 
 class GeneratedJvmClass (
         sourceFiles: Collection<File>,

jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt

@@ -635,7 +635,9 @@ class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR) {
                 }
                 ?: representativeTarget
 
-        return outputItemCollector.outputs.groupBy(SimpleOutputItem::target, SimpleOutputItem::toGeneratedFile)
+        return outputItemCollector.outputs
+            .sortedBy { it.outputFile }
+            .groupBy(SimpleOutputItem::target, SimpleOutputItem::toGeneratedFile)
     }
 
     private fun updateLookupStorage(