re PR go/92820 (libgo.so.15 has executable stack)

	PR go/92820
    runtime: always mark assembly file as non-executable stack
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/210037

From-SVN: r279010

gcc/go/gofrontend/MERGE

-017830d2a4bd2efbddf5e841ba9ccff8acf9d7c8
+a59794347b9db6dc2101a65c3e1a068051c0ee81
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/runtime/go-context.S

@@ -66,8 +66,9 @@ __go_makecontext:
 
 	ret
 
-	.section	.note.GNU-stack,"",@progbits
 	.section	.note.GNU-split-stack,"",@progbits
 	.section	.note.GNU-no-split-stack,"",@progbits
 
 #endif
+
+	.section	.note.GNU-stack,"",@progbits