KT-1645 Propose members according to smart casts

#KT-1645 fixed

idea/testData/completion/basic/AutoCastAfterIf.kt

@@ -0,0 +1,14 @@
+trait Expr
+class Num(val value : Int) : Expr
+
+fun eval(e : Expr) {
+    if (e is Num) {
+        return e.<caret>
+    }
+}
+
+// EXIST: value
+
+
+
+

idea/testData/completion/basic/AutoCastAfterIfMethod.kt

@@ -0,0 +1,12 @@
+class Expr {}
+class Num : Expr() {
+    fun testing() {}
+}
+
+fun eval(e : Expr) {
+    if (e is Num) {
+        return e.<caret>()
+    }
+}
+
+// EXIST: testing

idea/testData/completion/basic/AutoCastForThis.kt

@@ -0,0 +1,11 @@
+trait Expr {
+    public fun testThis() {
+        if (this is Num) {
+            this.<caret>
+        }
+    }
+}
+
+class Num(val toCheck : Int) : Expr
+
+// EXIST: toCheck

idea/testData/completion/basic/AutoCastInWhen.kt

@@ -0,0 +1,8 @@
+trait Expr
+class Sum(val left : Expr, val right : Expr) : Expr
+
+fun evalWhen(e : Expr) : Int = when (e) {
+    is Sum -> e.<caret>
+}
+
+// EXIST: left, right

idea/testData/completion/basic/CallLocalLambda.kt

@@ -0,0 +1,11 @@
+class TestClass {
+    public fun testMethod() {
+    }
+}
+
+fun testFun() {
+    val lambda = {() -> TestClass() }
+    lambda().<caret>
+}
+
+// EXIST: testMethod

idea/testData/completion/basic/InCallExpression.kt

@@ -1,13 +1,13 @@
 package something
 
 class SomeTempClass {
-    fun testSome() {
+    fun helloWorld() {
 
     }
 
     fun test() {
-        test<caret>()
+        hello<caret>()
     }
 }
 
-// EXIST: test, testSome
+// EXIST: helloWorld