Bring some important updates from NetBSD up to about 2008/04/25.
The main feature is initial support for C99.
This is a very basic update to make it easier to merge new
compiler attirbutes but more updates are likely to follow.
Obtained from: NetBSD
MFC after: 2 weeks
This is just a vendor import by now. I'll wait until i'll get the
imported files back via CTM before applying the FreeBSD patches.
Don't use it yet.
Submitted by: Jochen Pohl <jpo.drs@sni.de>
Obtained from: (NetBSD -- this version is directly from Jochen)