K 10
svn:author
V 5
andre
K 8
svn:date
V 27
2013-08-24T11:17:25.087408Z
K 7
svn:log
V 298
Resolve the confusion between the head_list and the hook list.

The linked list of pfil hooks is changed to "chain" and this term
is applied consistently.  The head_list remains with "list" term.

Add KASSERT to vnet_pfil_uninit().

Update and extend comments.

Reviewed by:	eri (previous version)

END