runtime: disable TestGdbPython on ppc64

(issue #10017)

Change-Id: Ia1267dfdb4474247926a998e32d9c6520015757d
Reviewed-on: https://go-review.googlesource.com/6130Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

src/runtime/runtime-gdb_test.go

@@ -9,6 +9,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"runtime"
+	"strings"
 	"testing"
 )
 
@@ -42,6 +43,9 @@ func TestGdbPython(t *testing.T) {
 	if runtime.GOOS == "darwin" {
 		t.Skip("gdb does not work on darwin")
 	}
+	if strings.HasPrefix(runtime.GOARCH, "ppc64") {
+		t.Skip("gdb does not work on ppc64 - issue 10017")
+	}
 
 	if runtime.GOOS == "linux" && runtime.GOARCH == "arm" {
 		t.Skip("issue 10002")