Support cross-testing (version 3)

[Roland McGrath]

>  # Whether to run test programs built for the library's host system.
>  ifndef run-built-tests
>  ifeq (yes,$(cross-compiling))
> +ifeq (,$(test-wrapper))
>  run-built-tests = no

You can do:

	ifeq (yes|,$(cross-compiling)|$(test-wrapper))

and avoid the repetition of the else case.

> diff --git a/scripts/cross-test-ssh.sh b/scripts/cross-test-ssh.sh
> new file mode 100755
> index 0000000..5dd3be4
> --- /dev/null
> +++ b/scripts/cross-test-ssh.sh

Let's put this in a separate commit.  (I haven't reviewed the contents yet).
It can along with some install.texi additions to describe using it.

This looks OK with this elision and the clean-up above.


Thanks,
Roland