librsvg: update 2.58.2 -> 2.59.2

Upstream has moved from autotools to meson, which requires a substantial
amount of tweaks to the recipe.

Signed-off-by: Alexander Kanavin <[email protected]>
Signed-off-by: Mathieu Dubois-Briand <[email protected]>
(adapted from oe-core commit ae4824f4f6234884a245bce314d6305ad8eb982d)
Signed-off-by: Scott Murray <[email protected]>

Author: kanavin