Added support for connecting to LDAP servers located using DNS
SRV records. Added lock around resolver library which is shared
by the DNS SRV code and the getdxbyname() code.

Added ldap_pvt_sasl_bind() prototype to ldap_pvt.h. This
required importing sasl.h into ldap_pvt.h, thus that import
was removed from ldap-int.h.

(callbacks not yet implemented though).

Braced ldap_connect_to_path() in #ifdef LDAP_PF_LOCAL so as to compile
without PF_LOCAL support.

support for DCE slash-delimited, left-to-right DNs;
support for a domain socket transport (enable with
--enable-ldapi); and extensions to URL parsing to
support the latter transport.

	autoconf 2.13.3
	aclocal from automake 1.14a
	libtool 1.3.3

trap code.

in searches, and experimental "trap" subcommand.

tcp_read/write should not be used.

should also be applied to back-bdb2/idl.c.

Used only for simple bind when dn == NULL and password != NULL.

ITS#400: LDAP_TIMEOUT handling

Updates to extended operation framework to support arbitrary
referrals and extended results without OIDs.
Updated passwd extended operation to support returning update_refs
as needed.  Needs replog support.

extremely broken and I can only wonder how I got some much mileage out
of it.  The problem is that we deal with pointers to the groups
themselves, either in current_group or current_to and current_nto.
These pointers would break on reallocs.  So now the the basic togroups
is an array to pointers to Group.  Since the array can be resized at
any time, what we actually pass around is pointer to an array of
pointers to Group or Group ***.