Log Message:
Update USE_TOOLS to cover all current tools in use
Move install to sbin
Update COMMENT and DESCR
Add -u to download the system-vulnerabilities file only
Add sample audit-system.conf
Add logic for SYSVULNDIR creation
Use PKG_SYSCONFDIR correctly
Check we can write to SYSVULNDIR
An ERROR in the script gets an exit
Expose FETCH_TOOL* but warn that changing them is unsupported