Treat SEALED_SUBCLASS_FQ_NAME_LIST change as a class signature change

#KT-19580

jps-plugin/testData/incremental/classHierarchyAffected/sealedClassImplAdded/Base.kt

@@ -1,4 +1,4 @@
-sealed class Base {
-    class A : Base()
-    class B : Base()
-}
+sealed class Base
+
+class A : Base()
+class B : Base()

jps-plugin/testData/incremental/classHierarchyAffected/sealedClassImplAdded/Base.kt.new.1

@@ -1,5 +1,5 @@
-sealed class Base {
-    class A : Base()
-    class B : Base()
-    class C : Base()
-}
+sealed class Base
+
+class A : Base()
+class B : Base()
+class C : Base()

jps-plugin/testData/incremental/classHierarchyAffected/sealedClassImplAdded/build.log

@@ -1,8 +1,8 @@
 ================ Step #1 =================
 
 Cleaning output files:
-  out/production/module/Base$A.class
-  out/production/module/Base$B.class
+  out/production/module/A.class
+  out/production/module/B.class
   out/production/module/Base.class
 End of files
 Compiling files:
@@ -27,14 +27,14 @@ COMPILATION FAILED
 ================ Step #2 =================
 
 Cleaning output files:
-  out/production/module/Base$A.class
-  out/production/module/Base$B.class
-  out/production/module/Base$C.class
+  out/production/module/A.class
+  out/production/module/B.class
   out/production/module/Base.class
+  out/production/module/C.class
 End of files
 Compiling files:
   src/Base.kt
   src/use.kt
 End of files
 Exit code: OK
-------------------------------------------
+------------------------------------------

jps-plugin/testData/incremental/classHierarchyAffected/sealedClassImplAdded/use.kt

@@ -1,5 +1,3 @@
-import Base.*
-
 fun use(x: Base): String =
         when (x) {
             is A -> "A"