Initial implementation of platformStatic

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

@@ -0,0 +1,36 @@
+object A {
+
+    val b: String = "OK"
+
+    platformStatic fun test1() : String {
+        return b
+    }
+
+    platformStatic fun test2() : String {
+        return test1()
+    }
+
+    fun test3(): String {
+        return "1".test5()
+    }
+
+    platformStatic fun test4(): String {
+        return "1".test5()
+    }
+
+    platformStatic fun String.test5() : String {
+        return this + b
+    }
+}
+
+fun box(): String {
+    if (A.(A::test1)() != "OK") return "fail 1"
+
+    if (A.(A::test2)() != "OK") return "fail 2"
+
+    if (A.(A::test3)() != "1OK") return "fail 3"
+
+    if (A.(A::test4)() != "1OK") return "fail 4"
+
+    return "OK"
+}