Local objects (#215)

* bug fix

* bug fix with nested inner classes

* - fixed FixMeInner
- support of inner classes in local classes
- support of object expressions in initializers

* comments

* merged modification

* - review fixes
- tests

* review fixes

* review fixes

backend.native/tests/codegen/localClass/innerTakesCapturedFromOuter.kt

@@ -0,0 +1,18 @@
+fun box() {
+    var previous: Any? = null
+    for (i in 0 .. 2) {
+        class Outer {
+            inner class Inner {
+                override fun toString() = i.toString()
+            }
+
+            override fun toString() = Inner().toString()
+        }
+        if (previous != null) println(previous.toString())
+        previous = Outer()
+    }
+}
+
+fun main(args: Array<String>) {
+    box()
+}