Fix wait4child change: Prefer wait3 over wait. Use SIGNAL instead of signal.

Removed external include/library paths from projects.  External paths should
be set via Tools | Options | Directories.  This allows each developer the
freedom to install external libraries where they desire.
Used libdb.lib instead of libdbs.lib to avoid thread conflicts.
Added hs_regex.lib to library input.  We require some form of regex, this
library works (and is relatively easy for the user to install).
Removed a little lint which MCVC5 detected.
Need to sort out single-threaded vs multithreaded library generation.

and back-bdb2/compare.c.

  tcp_close -> closesocket
  ioctl -> ioctlsocket
Modify codes to use tcp_close() instead of close() for sockets.
Modify ioctl codes to be compatible with WINSOCK.

the lock is acquired.  Add comments to that effect.  Remove
unnecessary busy loops from slapd/lock.c and slurpd/lock.c.

library, not header.  Eliminate need for <ac/unistd.h> to sometimes
include <fcntl.h> and/or <sys/file.h>.  Change lock API to expect
fd not FILE*.  Allows wider use and eliminates requirement that
lutil_lockf.h depencency on stdio.h.
Implemented lockf, fcntl, and flock locking in lutil/lockf.c.
Additional implementations (including no-op) may be needed.
Update slapd/lock.c and slurpd/lock.c to use new API.

being renamed through modrdn/moddn. This in preparation to add support
for MODDN v3.

ignore input when connection is closing.

changes to closing.  Need to add protection against read set races.

Mainly updated back-bdb2, back-passwd, back-shell to use slap_get_time().

remove race conditions on connection close.
BROKEN: various counters for dn=monitor.
Initial testing on FreeBSD (with and without pthreads) was successfull.
Have not yet tested preemptive threading environments.
Have not built against backends other than LDBM.

by portable.h with NDEBUG undefined.  This makes assert() is always
available and automatically disables itself when LDAP_DEBUG is undefined.
I've included a basic assert() for pre-STDC compilers.  It relies on
abort() which may not actually be available.  (well replace abort()
with whatever is appropriate if and when we're faced with a pre-STDC
compiler that doesn't have assert()).