Use a UDP socket connected to itself to allow signals to terminate the
select() in slapd_daemon_task().

to validate input dn's BEFORE sending dn's to server.
Also fixed getfilter to use REG_EXTENDED|REG_NOSUB.  (and fixed one
case where REG_BASIC was still used).
s/strdup/LDAP_STRDUP/
Added ldap_pvt_str2lower/upper

Fix Statlog() formats, remove an implicit int, include <ctype.h> for isspace().

s/exit(0)/exit(EXIT_SUCCESS)/
add <ac/stdlib.h> where needed and other minor header adjustments

  by <who> <access> changed to by <who>+ <access> (joined with AND)
  added peername=<regex> sockname=<regex> url=<regex>
  removed addr=<regex> (use peername instead).
replace dn_upcase with str2upper and str2lower.  Use where needed.

  added slap_ and ldbm_ to many structures
  added typedefs to many structures
  used typedefs
New main.c argument parsing with ldap url support (replacing -a address).
New sockaddr_in handling and support for multiple listeners.

to exhaust all protocol units received from the transport layer.
I think this is the necessary fix for the TLS-data-ready/
socket-not-ready issue, but I have not experimented that problem
yet, so I am unsure about its effectiveness.
Now, do we need something like that for connection_write?  How would
we go about implementing it?

use TLS right away or not on that connection.

Only bind on TLS port if explicitly requested with -T, otherwise all
kind of conflicts happen when running tests.

Bind and listen on TLS port too

use.

added lber_types.h.nt, lber_types.h.in
removal of NULLxxx internal macros (in favor of NULL).
ch_free added to slapd,slurpd/ch_malloc.c
#define free ch_free (should be removed after s/free/ch_free/g) in proto-slap.h
ch_malloc and friends use ber_memalloc and friends

compiling errors on other platforms.  Will need to update NT projects.

backout previous nt changes (actually, just don't include nt_svc.c)

	ldap_defaults.h incorporates non-generated ldapconfig.h values.
	ldap_config.h.in is new template for autoconf generated defaults
		(namely directories and paths)
	ldap_config.h.nt, NT template (must be manually copied)
	s/<ldapconfig.h>/<ldap_defaults.h>/
	s/DIRSEP/LDAP_DIRSEP/ & s/DEFAULT_/LDAP_/

calls.  Such checks are ineffective it protecting connection_read/_write
from being called inactive streams.  connection_read/_write have their
own protection against such (in connection_get()).

acquire c_mutex.