Generate "$kotlinClass"/"$kotlinPackage" reflection fields to every class

Some seemingly irrelevant tests were changed because now there's <clinit> in
almost every class and class initialization begins with executing it

compiler/testData/codegen/bytecodeText/kt2202.kt

@@ -18,4 +18,4 @@ class B {
 }
 
 // 0 INVOKEVIRTUAL
-// 4 INVOKESPECIAL
+// 2 INVOKESPECIAL [AB]\.

compiler/testData/codegen/bytecodeText/privateDefaultArgs.kt

@@ -13,4 +13,4 @@ fun box(): String {
 }
 
 // 0 INVOKEVIRTUAL
-// 3 INVOKESPECIAL
+// 2 INVOKESPECIAL B\.foo