dd_flags is renamed to the placeholder position dd_unused so that
we can spot "broken software" which assumes we have Jan Simon Pendry's
union mounts (we don't have them, and won't have them ever again).
__opendir2 question spotted by matthew
verified to not break ports by sthen

use-after-free bugs; ok krw@ dlg@ pirofti@

domainname being set.  adjust the scripts to start it in that way.
discussed with pyr

individual pages (based on the existing string man pages). By Tim van
der Molen (tbvdm at xs4all dot nl) after a suggestion by millert@.
ok deraadt

so we can enjoy it on the screen as well
ok deraadt@

do that if pf is actually enabled (rely on pfctl -si)
requested by deraadt@

ok robert@

and complex math routines are complete.  OK kettenis@.

extended-precision support.  Mostly from Cephes.

ok robert@ deraadt@

the wcsdup example.
ok stsp

startups according to rules that some of us understand.  it may come of
sounding cocky, but any step beyond that would end up with a dependency
graph which will never happen.  this file is now ~60% of the length a
week ago.
ok guenther, robert, aja and people who will not test it until it is in

accordingly.
ok robert@

ok robert@

rc_pre() functions are returning correctly. This change
also simplyfies the changes because false || return 1 can be replaced
with false if that's the last call. thanks halex@!

ok halex

can run surprisingly early.  Move the X socket directory creation code
into a function too.
robert liked it

ok robert@

spotted by halex@

at the right place.

ok robert@

ok halex@

silently now.
ok guenther

(As a reminder to others who spot this weirdness later and get
confused like I did:  netstart never starts pfsync automatically,
because it would screw the states.  That is why there is this 2nd
manual netstart run for pfsync)
ok mpf

switched a while back.
ok miod, kettenis

the bottom, after checking that they are OK with being there.
ok ajacoutot