Same as sys/crypto/sha2.c revision 1.2

ok deraadt@

ok deraadt@ espie@ marcm@

fingerprints, please go to http://lcamtuf.coredump.cx/p0f-help/ with any
and all Win95 boxes.  thanks!

are in the 21st century now, you know.

ok deraadt@ henning@ frantzen@

ok deraadt@

values for RTLD_GLOBAL and RTLD_LOCAL are same as solaris uses.

ok frantzen@

http://lcamtuf.coredump.cx/p0f-help/ to help add and refine fingerprints

frantzen@ ok

otherwise preserve `hostname`
netbooted machines can live perfectly fine without it; they get their hostname
earlier.
ok krw@ cedric@

way for some future work.  no function changes yet.
help testing otto@ and markus@

problems noted by fgsch@ and deraadt@

ok deraadt and co.

mail floppy parts a fair bit smaller.

things in crypt.3, and create MLINKS

- new entries, taken from arla source tree
- a few comments about cache sizes by me
Unfortunately, the default cache size must be very small (20M),
because the CD currently recommends a /var partition of 25M.

ok tdeval@

for ENAMETOOLONG, though since we use strlcpy() and strlcat() this
is not a big deal.  Problem found by vincent@

ok deraadt@