Provide "toString" for reflection objects

compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/propertyToString.kt

@@ -0,0 +1,26 @@
+package test
+
+import kotlin.test.assertEquals
+
+val top = 42
+var top2 = -23
+
+val String.ext: Int get() = 0
+var IntRange?.ext2: Int get() = 0; set(value) {}
+
+class A(val mem: String)
+class B(var mem: String)
+
+fun assertToString(s: String, x: Any) {
+    assertEquals(s, x.toString())
+}
+
+fun box(): String {
+    assertToString("val top", ::top)
+    assertToString("var top2", ::top2)
+    assertToString("val java.lang.String.ext", String::ext)
+    assertToString("var kotlin.IntRange.ext2", IntRange::ext2)
+    assertToString("val test.A.mem", A::mem)
+    assertToString("var test.B.mem", B::mem)
+    return "OK"
+}