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/innerWithCapture.kt

@@ -0,0 +1,13 @@
+fun box(s: String): String {
+    class Local {
+        open inner class Inner() {
+            open fun result() = s
+        }
+    }
+
+    return Local().Inner().result()
+}
+
+fun main(args : Array<String>) {
+    println(box("OK"))
+}