cmake: update FindVLE and FindGVLE

- related to commit cb15ee21ed8162b84da13a2445b7c19e0e77ed54 of vle
- related to commit db13eac5d61a8be07a622e541a6540d5063b35b5 of vle
- related to commit 7dc91f990098ce79c4fa96e306ec759d3f34212b of vle