update regression tests wrt skip steps (fixed in pfctl.c rev1.305);
ok henning mcbride (a while back)

Update regress tests for the following changes:
- if_addr RB_TREE (Address sort differently on an interface)
- skip steps changes
- RDOMAIN
- reordering of address/port tests
- fastroute is gone
-

Update regress tests for the following changes:
- if_addr RB_TREE (Address sort differently on an interface)
- skip steps changes
- RDOMAIN
- reordering of address/port tests
- fastroute is gone
- keep state is no longer printed by default
- lo0 now has link-local scope address in addition to ::1

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Handle default 'flags S/SA keep state', 'no state' and 'flags any'.

First pass at doing regress tests on the optimizer (pfctl -o).
Still need to add some more input files to test specific corner cases.