Log Message:
Update to 3.0.3. I don't have a comprehensive list of changes, only
"many new features". One looks promising:
- a new easy-to-use CPU scheduler which includes weights, caps,
  and automatic SMP load-balancing;

pkgsrc changes:
- remove patches against unused files
- add a netbsd-specific example with verbose comments
- add a vif script for ip-routing based setups