[RFA/testsuite/ada] Add null_record testcase

[Joel Brobecker]

> (BTW, Is there a GNU/Ada coding standard?)

I am not sure about an Ada coding standard specific for GNU, I will
ask around. I know there is a manual that makes some recommendations
in terms of coding standars: Ada Quality and Style.

I am reluctant to provide a link from adahome.com as I've heard
that the site is no longer maintained, but that's the only place
where I could find it:

    http://www.adahome.com/Resources/refs/aqs.html

<<
Ada Quality and Style: Guidelines for Professional Programmers" (AQS)
intended for Ada 83 programmers, was published by the Software
Productivity Consortium (Van Nostrand Reinhold, ISBN 0-442-23805-3),
and has been revised for Ada 95 (new version released in October 1995).

The AQS has plenty of good ideas, recommendations, and rationales for
coding styles, but note that it is quite detailed and thorough (in case
you were thinking of using it as a reference for code inspections/auditing).
Finally, one doesn't have to adopt or agree with every guideline in it.
>>

-- 
Joel