remove FunctionDescriptorImpl constructor overloading

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ConstructorDescriptorImpl.java

@@ -24,7 +24,7 @@ public class ConstructorDescriptorImpl extends FunctionDescriptorImpl implements
     }
 
     public ConstructorDescriptorImpl(@NotNull ConstructorDescriptor original, @NotNull List<AnnotationDescriptor> annotations, boolean isPrimary) {
-        super(original, annotations, "<init>");
+        super(original.getContainingDeclaration(), original, annotations, "<init>");
         this.isPrimary = isPrimary;
     }
 

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java

@@ -43,10 +43,11 @@ public abstract class FunctionDescriptorImpl extends DeclarationDescriptorImpl i
     }
 
     protected FunctionDescriptorImpl(
+            @NotNull DeclarationDescriptor containigDeclaration,
             @NotNull FunctionDescriptor original,
             @NotNull List<AnnotationDescriptor> annotations,
             @NotNull String name) {
-        super(original.getContainingDeclaration(), annotations, name);
+        super(containigDeclaration, annotations, name);
         this.original = original;
     }
 

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/NamedFunctionDescriptorImpl.java

@@ -16,13 +16,20 @@ public class NamedFunctionDescriptorImpl extends FunctionDescriptorImpl implemen
         super(containingDeclaration, annotations, name);
     }
 
-    private NamedFunctionDescriptorImpl(@NotNull NamedFunctionDescriptor original, @NotNull List<AnnotationDescriptor> annotations, @NotNull String name) {
-        super(original, annotations, name);
+    private NamedFunctionDescriptorImpl(@NotNull DeclarationDescriptor containingDeclaration, @NotNull NamedFunctionDescriptor original, @NotNull List<AnnotationDescriptor> annotations, @NotNull String name) {
+        super(containingDeclaration, original, annotations, name);
+    }
+
+    @NotNull
+    @Override
+    public NamedFunctionDescriptor getOriginal() {
+        return (NamedFunctionDescriptor) super.getOriginal();
     }
 
     @Override
     protected FunctionDescriptorImpl createSubstitutedCopy() {
         return new NamedFunctionDescriptorImpl(
+                getContainingDeclaration(),
                 this,
                 // TODO : safeSubstitute
                 getAnnotations(),
@@ -32,7 +39,7 @@ public class NamedFunctionDescriptorImpl extends FunctionDescriptorImpl implemen
     @NotNull
     @Override
     public NamedFunctionDescriptor copy(DeclarationDescriptor newOwner, boolean makeNonAbstract) {
-        NamedFunctionDescriptorImpl copy = new NamedFunctionDescriptorImpl(newOwner, Lists.newArrayList(getAnnotations()), getName());
+        NamedFunctionDescriptorImpl copy = new NamedFunctionDescriptorImpl(newOwner, getOriginal(), Lists.newArrayList(getAnnotations()), getName());
         copy.initialize(
                 getReceiverParameter().exists() ? getReceiverParameter().getType() : null,
                 expectedThisObject,