[LTP] Rename tst_test_* to tst_require_*

[Petr Vorel]

Hi,

> > Gentle reminder, this timeouts tomorrow when I will apply the original
> > patches, unless someone steps in.
> OK, if nobody objects, tomorrow I'll modify Joerg's patchset to be
> "Rename tst_test_* to tst_needs_*" and push it on his behalf.

> I like *require* more, but it's better to have the same name for variables
> and functions.
Actually thinking about it twice, I'm going to apply the original patch.
*require* is really more descriptive.

Kind regards,
Petr