Update LINT:
- add reference to kernconf(5)
- copy description of SMP from GENERIC,
espcially that APIC_IO can be laft out
- truncate description of polling(4) & dummynet(4),
ensure reference to polling(4) & dummynet(4).
This also removed outdated description of dependency on HZ.
Corret information is in manual pages; it is best to have it in one place.
- point out that SOFTUPDATES applies to UFS only.
- add HAMMER to list of filesystems which cant be build as module.
- point outthat ATA_STATIC_ID is for NATA also, not just ATA.