default -> companion: replace all mentions of default and default object

idea/testData/completion/basic/common/ExtensionFunctionInClassObject.kt

@@ -3,11 +3,11 @@ package p
 class B
 
 class R {
-    default object {
+    companion object {
         fun B.f() {
             this.<caret>
         }
     }
 }
 
-// EXIST: { itemText: "f", tailText: "() for B in R.Default" }
+// EXIST: { itemText: "f", tailText: "() for B in R.Companion" }

idea/testData/completion/basic/common/InClassObject.kt

@@ -4,7 +4,7 @@ class C {
     inner class InnerClass
     object AnObject
 
-    default object {
+    companion object {
         val classObjectField = 0
         class ClassObjectClass
 

idea/testData/completion/basic/common/InNestedClass.kt

@@ -9,7 +9,7 @@ class C {
         }
     }
 
-    default object {
+    companion object {
         fun fromClassObject(){}
     }
 }

idea/testData/completion/basic/common/NestedClassesOnClassWithDefaultObject.kt

@@ -2,7 +2,7 @@ class A {
     class Nested
     inner class Inner
 
-    default object {
+    companion object {
         class Nested2
         val c: Int = 1
         object Obj2
@@ -19,7 +19,7 @@ fun some() {
 }
 
 // EXIST: Nested
-// EXIST: Default
+// EXIST: Companion
 // EXIST: c
 // EXIST: foo
 // EXIST: Obj

idea/testData/completion/basic/common/NestedClassesOnClassWithNamedDefaultObject.kt

@@ -2,7 +2,7 @@ class A {
     class Nested
     inner class Inner
 
-    default object Named {
+    companion object Named {
         class Nested2
         val c: Int = 1
         object Obj2

idea/testData/completion/basic/common/NestedClassesOnDefaultObjectLiteral.kt

@@ -2,7 +2,7 @@ class A {
     class Nested
     inner class Inner
 
-    default object Named {
+    companion object Named {
         class Nested2
         val c: Int = 1
         object Obj2

idea/testData/completion/basic/common/OverloadFunctions.kt

@@ -1,7 +1,7 @@
 package Test.MyTest
 
 class A {
-    default object {
+    companion object {
         public fun testOther() {
 
         }

idea/testData/completion/basic/common/classObjectElementsInClass.kt

@@ -1,5 +1,5 @@
 class Some {
-    default object {
+    companion object {
         val coProp = 12
 
         fun coFun = 12

idea/testData/completion/basic/common/extensions/ExtensionOnNestedClassObject.kt

@@ -2,11 +2,11 @@ package foo
 
 class A {
     class B {
-        default object
+        companion object
     }
 }
 
-fun A.B.Default.foo() {}
+fun A.B.Companion.foo() {}
 
 fun some() {
     A.B.<caret>

idea/testData/completion/basic/common/extensions/NoExtensionFromOuter.kt

@@ -1,7 +1,7 @@
 class C {
     fun String.memberExtForString(){}
 
-    default object {
+    companion object {
         fun foo() {
             "".<caret>
         }

idea/testData/completion/basic/multifile/NotImportedObject/NotImportedObject.dependency.kt

@@ -8,7 +8,7 @@ fun some() {
 }
 
 class Some {
-  default object {
+  companion object {
     object NamedObjectInClassObject
   }
 }