[PATCH] fix configure script for 0.7 branch

[Andrei Kholodnyi]

> in speech-dispatcher-0-7, this breaks 'make distcheck'.
> During it, a tarball is created with the name speech-dispatcher-.tar.gz.

Hi Hynek,

This leads back to my question I have asked a couple of weeks ago.
Is any progress from your side towards setting up an automatic build?

I'm somewhat too lazy doing make distcheck each time before submitting
patches :D

Thanks,
Andrei.