Smart completion: inheritors instantiation suggested + fixed a bug with incorrect presentation of generic java class instantiation

idea/testData/completion/smartMultiFile/Inheritors/Inheritors.kt

@@ -0,0 +1,15 @@
+package p1
+
+fun foo(): p2.KotlinTrait {
+    return <caret>
+}
+
+// EXIST: { lookupString: "object", itemText: "object: KotlinTrait{...}" }
+// EXIST: { lookupString: "KotlinInheritor1", itemText: "KotlinInheritor1", tailText: "() (p2)" }
+// EXIST: { lookupString: "KotlinInheritor2", itemText: "KotlinInheritor2", tailText: "(s: String) (p2)" }
+// EXIST: { lookupString: "object", itemText: "object: KotlinInheritor3(){...}" }
+// ABSENT: PrivateInheritor
+// EXIST: { lookupString: "object", itemText: "object: JavaInheritor1(){...}" }
+// EXIST: { lookupString: "JavaInheritor2", itemText: "JavaInheritor2", tailText: "(...) (<root>)" }
+// ABSENT: JavaInheritor3
+// EXIST: { lookupString: "ObjectInheritor", itemText: "ObjectInheritor", tailText: " (p2)" }

idea/testData/completion/smartMultiFile/Inheritors/JavaInheritors.java

@@ -0,0 +1,16 @@
+import p2.KotlinTrait
+
+public abstract class JavaInheritor1 implements KotlinTrait {
+}
+
+public class JavaInheritor2 extends JavaInheritor1 {
+    public JavaInheritor2() {
+    }
+
+    public JavaInheritor2(int p) {
+    }
+}
+
+// not visible - it's package local
+class JavaInheritor3 extends KotlinTrait {}
+

idea/testData/completion/smartMultiFile/Inheritors/KotlinInheritors.kt

@@ -0,0 +1,17 @@
+package p2
+
+trait KotlinTrait
+
+open class KotlinInheritor1 : KotlinTrait
+
+class KotlinInheritor2(s: String) : KotlinInheritor1()
+
+abstract class KotlinInheritor3 : KotlinTrait
+
+class C {
+    private class PrivateInheritor : KotlinTrait
+}
+
+object ObjectInheritor : KotlinTrait
+
+// ALLOW_AST_ACCESS