Filenames with "=" crash contrib/test_summary

[Alexandre Oliva]

On Aug  8, 2000, "Billinghurst, David (CRTS)" <David.Billinghurst@riotinto.com> wrote:

>> From:	Alexandre Oliva [SMTP:aoliva@redhat.com]

>> The problem seems to be that the version of gawk you're using
>> interprets any argument containing `=' as a variable assignment,
>> instead of checking whether what is on the left of the `=' sign is a
>> valid variable name.

> Quite right.  Moving to gawk 3.0.5 (from 3.0.0) solves the problem.
> Still a portablilty issue, but probably not worth solving.

It was simple enough.  I'm checking in the following patch: