More error checking and reporting.
Slowly getting there, SSL_accept succeeds now, but connection breaks
immediately after that (my glue logic with slapd is broken).

the default context is initialized before the config file is read,
so the locations are not know at context initialization.

Change temporarily the default protocol from TLSv1 to SSLv3 with
fallback to SSLv2.  This seems necessary for slapd to accept connections
from Netscape.
Try to set the cipher list in the default context.  Does not semm to
work yet.

taken care of.  The second, however, on remove_old_locks is unclear.

Init the TLS environment if necessary.  Lots of things needed here,
in particular, preparing properly the default context.

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

Extend slapd_args with TLS info

Define LDAP_TLS_PORT as 636, the default port for LDAP over raw TLS

Fix detection of socklen_t
Rebuild configure to reflect that

Add use of TLS_LIBS so that test tools compile

Add tls.c
Add use of TLS_LIBS so that test tools compile

Add option definitions for TLS

Use $(TLS_LIBS)

Pass TLS_LIBS to the Makefile's.

Our check for SSLeay_add_ssl_algorithms fails with modern versions of
OpenSSL since it has been made a preprocessor macro.  Please review
this change to do the right thing w.r.t. rsaref.

Include $(TLS_LIBS)

Include TLS_LIBS

First version of TLS glue for SSLeay/OpenSSL originally written by
Bart Hartgers.  Untested.