Rename platform to header.

compiler/testData/multiplatform/incompatibleClasses/common.kt

@@ -1,25 +1,25 @@
-platform class PClass
-platform interface PInterface
-platform object PObject
-platform enum class PEnumClass
-platform annotation class PAnnotationClass
+header class PClass
+header interface PInterface
+header object PObject
+header enum class PEnumClass
+header annotation class PAnnotationClass
 
-internal platform object InternalObject
-public platform object PublicObject
-private platform object PrivateObject
+internal header object InternalObject
+public header object PublicObject
+private header object PrivateObject
 
-open platform class OpenClass
-abstract platform class AbstractClass
-final platform class FinalClass
+open header class OpenClass
+abstract header class AbstractClass
+final header class FinalClass
 
-// platform data class DataClass(val x: Int)
-platform class NonDataClass(x: Int)
+// header data class DataClass(val x: Int)
+header class NonDataClass(x: Int)
 
-platform class C1<A>
-platform class C2<B>
-platform class C3<D, E : D>
+header class C1<A>
+header class C2<B>
+header class C3<D, E : D>
 
-platform class C4<F>
+header class C4<F>
 
 
-platform abstract class ExtendsNumber : Number
+header abstract class ExtendsNumber : Number