default -> companion: default object -> class object in project code, builtins and libs code

compiler/tests/org/jetbrains/kotlin/jvm/compiler/AbstractSMAPBaseTest.kt

@@ -93,7 +93,7 @@ public trait AbstractSMAPBaseTest {
     }
 
     class SMAPAndFile(val smap: String?, val sourceFile: String) {
-        default object {
+        class object {
             fun SMAPAndFile(smap: String?, sourceFile: File) = SMAPAndFile(smap, getPath(sourceFile))
 
             public fun getPath(file: File): String {

compiler/tests/org/jetbrains/kotlin/jvm/compiler/MultiModuleJavaAnalysisCustomTest.kt

@@ -165,7 +165,7 @@ public class MultiModuleJavaAnalysisCustomTest : UsefulTestCase() {
         )
     }
 
-    default object {
+    class object {
         val PATH_TO_TEST_ROOT_DIR = "compiler/testData/multiModule/java/custom"
     }
 }

compiler/tests/org/jetbrains/kotlin/resolve/constants/evaluate/AbstractEvaluateExpressionTest.kt

@@ -108,7 +108,7 @@ public abstract class AbstractEvaluateExpressionTest : AbstractAnnotationDescrip
         }
     }
 
-    default object {
+    class object {
         val pattern = Pattern.compile(".+(?=:)")
     }
 }