cmd/dist: skip Fortran tests on Android

They don't work on Android but will be run if the host has gfortran
installed.

Change-Id: I983c5695a9e963def90e4f8264fb00077a0c5e53
Reviewed-on: https://go-review.googlesource.com/c/163838
Run-TryBot: Elias Naur <mail@eliasnaur.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/dist/test.go

@@ -626,7 +626,7 @@ func (t *tester) registerTests() {
 		if fortran == "" {
 			fortran, _ = exec.LookPath("gfortran")
 		}
-		if t.hasBash() && fortran != "" {
+		if t.hasBash() && goos != "android" && fortran != "" {
 			t.tests = append(t.tests, distTest{
 				name:    "cgo_fortran",
 				heading: "../misc/cgo/fortran",