Remove source annotations when copy class with kapt2

Writing source annotations enables incremental compilation for kapt2.
However they are not needed in bytecode, so we remove them when
copying classes.

# Conflicts:
#	compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt
#	compiler/frontend.java/src/org/jetbrains/kotlin/config/JVMConfigurationKeys.java

compiler/frontend.java/src/org/jetbrains/kotlin/config/JVMConfigurationKeys.java

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.config;
 
+import org.jetbrains.kotlin.incremental.components.SourceRetentionAnnotationHandler;
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCompilationComponents;
 import org.jetbrains.kotlin.modules.Module;
 import org.jetbrains.kotlin.script.KotlinScriptDefinition;
@@ -64,6 +65,9 @@ public class JVMConfigurationKeys {
     public static final CompilerConfigurationKey<File> MODULE_XML_FILE =
             CompilerConfigurationKey.create("path to module.xml");
 
+    public static final CompilerConfigurationKey<SourceRetentionAnnotationHandler> SOURCE_RETENTION_ANNOTATION_HANDLER =
+            CompilerConfigurationKey.create("source retention annotation handler");
+
     public static final CompilerConfigurationKey<String> DECLARATIONS_JSON_PATH =
             CompilerConfigurationKey.create("path to declarations output");
 

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

@@ -23,5 +23,4 @@ import org.jetbrains.kotlin.modules.TargetId
 interface IncrementalCompilationComponents {
     fun getIncrementalCache(target: TargetId): IncrementalCache
     fun getLookupTracker(): LookupTracker
-    fun getSourceRetentionAnnotationHandler(): SourceRetentionAnnotationHandler?
 }