[PATCH] Add new Tcl/DejaGnu test module test_simple to simplify tests

[Yichun Zhang]

Hello!

On Tue, Sep 4, 2018 at 3:35 PM Yichun Zhang (agentzh)
<yichun@openresty.com> wrote:
>
> Ported the handy routines is(), isnt(), like(), unlike(), ok(), nok()
> from Perl's Test::Simple module over to Tcl/DejaGnu as the test_simple
> module.
>

Just committed to master with the approval from fche.

Best,
Yichun