Initial implementation of platformStatic

compiler/testData/codegen/boxWithStdlib/platformStatic/default.kt

@@ -0,0 +1,14 @@
+
+object A {
+
+    platformStatic fun test(b: String = "OK") : String {
+        return b
+    }
+}
+
+fun box(): String {
+
+    if (A.test() != "OK") return "fail 1"
+
+    return "OK"
+}