[dev.power64] code review 152570049: all: merge default into dev.power64

src/cmd/gofmt/testdata/stdin7.golden

+                                                                                                                        //gofmt -stdin
+
+                                                                                                                        if err != nil {
+                                                                                                                                source := strings.NewReader(`line 1.
+line 2.
+`)
+                                                                                                                                return source
+                                                                                                                        }
+
+                                                                                                                        f := func(hat, tail string) {
+
+                                                                                                                                fmt.Println(hat+`
+                foo
+
+
+        `+tail,
+                                                                                                                                        "more",
+                                                                                                                                        "and more")
+                                                                                                                        }