more renames to get rid of "Jet" in class and method names

compiler/frontend.java/src/org/jetbrains/kotlin/asJava/KtJavaMirrorMarker.java

@@ -16,5 +16,5 @@
 
 package org.jetbrains.kotlin.asJava;
 
-public interface JetJavaMirrorMarker {
+public interface KtJavaMirrorMarker {
 }

compiler/frontend.java/src/org/jetbrains/kotlin/fileClasses/JvmFileClassUtil.kt

@@ -129,6 +129,6 @@ public val KtFile.javaFileFacadeFqName: FqName
     }
 
 public fun KtDeclaration.isInsideJvmMultifileClassFile() = JvmFileClassUtil.findAnnotationEntryOnFileNoResolve(
-        getContainingJetFile(),
+        getContainingKtFile(),
         JvmFileClassUtil.JVM_MULTIFILE_CLASS_SHORT
 ) != null

compiler/frontend.java/src/org/jetbrains/kotlin/load/java/structure/impl/JavaClassImpl.java

@@ -22,7 +22,7 @@ import kotlin.ArraysKt;
 import kotlin.jvm.functions.Function1;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.kotlin.asJava.JetJavaMirrorMarker;
+import org.jetbrains.kotlin.asJava.KtJavaMirrorMarker;
 import org.jetbrains.kotlin.descriptors.Visibility;
 import org.jetbrains.kotlin.load.java.structure.*;
 import org.jetbrains.kotlin.name.FqName;
@@ -163,7 +163,7 @@ public class JavaClassImpl extends JavaClassifierImpl<PsiClass> implements JavaC
     @NotNull
     public OriginKind getOriginKind() {
         PsiClass psiClass = getPsi();
-        if (psiClass instanceof JetJavaMirrorMarker) {
+        if (psiClass instanceof KtJavaMirrorMarker) {
             return OriginKind.KOTLIN_LIGHT_CLASS;
         }
         else if (psiClass instanceof PsiCompiledElement) {