[oe] update apr util library to version 1.3.7

[Rolf Leggewie]

Hi Lucian,

thank you for your patch.

Lucian Ion wrote:
> +++ b/recipes/apr/apr-util_1.3.7.bb

If we're seeing yet a new version, I'd like to see a unification of the 
recipes first (put common stuff into an inc file).

Regards

Rolf