Lazy resolve: Support for imports and Java interop

compiler/testData/lazyResolve/simpleClass.kt

@@ -8,7 +8,7 @@ package p; class C {fun f() {}}
 package p; open class G<T> {open fun f(): T {} fun a() {}}
 
 // FILE: d.kt
-package p; class G2<E> : G<E> { fun g() : E {} override fun f() : T {}}
+package p; class G2<E> : G<E> { fun g() : E {} override fun f() : E {}}
 
 // FILE: e.kt
 package p; fun foo() {}

compiler/testData/lazyResolve/simpleClass.txt

@@ -15,7 +15,7 @@ open class p.G</*0*/ T : jet.Any?> : jet.Any {
 final class p.G2</*0*/ E : jet.Any?> : p.G<E> {
     final /*constructor*/ fun </*0*/ E : jet.Any?><init>(): p.G2<E>
     final override /*1*/ fun a(): jet.Tuple0
-    open override /*1*/ fun f(): <root>
+    open override /*1*/ fun f(): E
     final fun g(): E
 }
 final fun foo(): jet.Tuple0