cmake: update FindVLE and FindGVLE

Commits related vle commits (see current pullrequest of vle)

- related to commit 550d21096be9c8a0d965b3617a11a707c697be03 of vle
- related to commit 2bc632b82032f9caa78cd66a30dc740e81de3f30 of vle
- related to commit d1a8cfd63cc6610a1d447300f2ef2f949f921909 of vle
- related to commit 39f3bdca3e7cf944494b6f8dc939c69f7f9c6903 of vle