HBSD SEGVGUARD: make segvguard's state-variables static

github-issue: #60
Signed-off-by: Oliver Pinter <oliver.pinter@hardenedbsd.org>
HBSD HARDENING: make hardening related state variebles static

github-issue: #60
Signed-off-by: Oliver Pinter <oliver.pinter@hardenedbsd.org>
HBSD LOG: make log related state-variables static

github-issue: #60
Signed-off-by: Oliver Pinter <oliver.pinter@hardenedbsd.org>