Revert "[light classes] drop old light classes and backend: iteration #2"

This reverts commit 97ce502cbe.

compiler/testData/asJava/lightClasses/ideRegression/AllOpenAnnotatedClasses.kt

@@ -23,4 +23,6 @@ class C {
     }
 }
 
+// LAZINESS:NoLaziness
+// SKIP_SANITY_TEST
 // COMPILATION_ERRORS

compiler/testData/asJava/lightClasses/ideRegression/OverridingFinalInternal.java

@@ -1,8 +1,8 @@
 public final class C /* p.C*/ extends p.A {
   public  C();//  .ctor()
 
-  public int af$light_idea_test_case();//  af$light_idea_test_case()
+  public int af();//  af$light_idea_test_case()
 
-  public int getAp$light_idea_test_case();//  getAp$light_idea_test_case()
+  public int getAp();//  getAp$light_idea_test_case()
 
 }

compiler/testData/asJava/lightClasses/ideRegression/OverridingFinalInternal.kt

@@ -10,4 +10,5 @@ class C : A() {
     }
 }
 
+// LAZINESS:NoConsistency
 // COMPILATION_ERRORS

compiler/testData/asJava/lightClasses/ideRegression/OverridingInternal.kt

@@ -13,4 +13,5 @@ class C : A(), I {
     override fun if() = 5
 }
 
+// LAZINESS:NoLaziness
 // COMPILATION_ERRORS

compiler/testData/asJava/lightClasses/ideRegression/OverridingProtected.kt

@@ -10,4 +10,5 @@ class C : A() {
     }
 }
 
+// LAZINESS:NoLaziness
 // COMPILATION_ERRORS