path/filepath: disable symlink tests on android.

Same reason as https://go-review.googlesource.com/#/c/16115/

For golang/go#10807

Change-Id: Id0c404e9feb963f39a111fc317c9787692516ae1
Reviewed-on: https://go-review.googlesource.com/16116Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/path/filepath/match_test.go

@@ -167,7 +167,7 @@ var globSymlinkTests = []struct {
 
 func TestGlobSymlink(t *testing.T) {
 	switch runtime.GOOS {
-	case "nacl", "plan9":
+	case "android", "nacl", "plan9":
 		t.Skipf("skipping on %s", runtime.GOOS)
 	case "windows":
 		if !supportsSymlinks {

src/path/filepath/path_test.go

@@ -764,7 +764,7 @@ func simpleJoin(dir, path string) string {
 
 func TestEvalSymlinks(t *testing.T) {
 	switch runtime.GOOS {
-	case "nacl", "plan9":
+	case "android", "nacl", "plan9":
 		t.Skipf("skipping on %s", runtime.GOOS)
 	}