Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

- If (keysize+datasize)%(bsize=14)==0, insertion of a `big key' would cause
an invariant (actually, an ugly hack) to fail, and all Hell would break
loose.

When deleting a big key, the offset of an empty page should be bsize, not
bsize-1; otherwise an insertion into the empty page will cause the new key to
be elongated by 1 byte.

Make the packing more dense in a couple of cases.

- fix NULL dereference exposed on big bsize values;

Obtained from: NetBSD via OpenBSD

Several signed/unsigned warning fixes.

Style changes (including additional casts to shut up warnings). This
commit does not affect MD5 of object file.

Diff reduction against OpenBSD: ANSI'fy prototypes.

(This is part of a larger changeset which is intended to reduce diff only,
thus some prototypes were left intact since they will be changed in the
future).

Verified with: md5(1)

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

Eliminate 61 warnings emitted at WARNS=2 (leaving 53 to go).
Only warnings that could be fixed without changing the generated object
code and without restructuring the source code have been handled.

Reviewed by: /sbin/md5

Remove __P() usage.

Remove 'register' keyword.

General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>

This commit was generated by cvs2svn to compensate for changes in r14272,
which included commits to RCS files with non-trunk default branches.

Import updated Berkeley DB into CSRG branch

BSD 4.4 Lite Lib Sources