graphics/cinepaint: Fix build with Oyranos-0.9.6.

The port seems to have some unique properties but was broken by my [1]
recent Oyranos update.

. fix build with oyranos-0.9.6, idea from

https://gitlab.com/beku/cinepaint-ng;

. QA: add dependencies.

PR: 221207 [1]
Reported by: gja822@narod.ru