keyutils: Bump version to 1.5.9, fix patches and

- Bump version to 1.5.9
- Remove patches already included in this version
- Use make parameters instead of environment variables
- Add an upstream patch to fix building statically
- Adapt old patches to the new version
- Add a hash file

Fixes:
  http://autobuild.buildroot.net/results/ced/ced596bd1c73286f7044f5a8e11b6588fc973f11/



Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>