Tdxutils patch

[F. Senault]

Hi.
I'm writing a webnews around a local INN server, using heavily
tdx-utils to manipulate the overview.

I needed to add a quite basic functionality : the ability to retrieve
in one command the overview data between two artnums.

Looking into the code, the modification was really straightforward, so
I made it - now, with -o, I can stipulate -l num1 and -h num2 to
retrieve data between num1 and num2.  No other functionality has been
impacted, AFAICT.

Here's the patch against the code (INN 2.4.2), and the .pod file.

TIA if you could review the patch and integrate it.

Fred
-- 
The most horrifying thing about Unix is that, no matter how many times
you hit yourself over the head with it, you never quite manage to lose
consciousness.  It just goes on and on.             (Patrick Sobalvarro)

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-- File: tdx-util-range.patch