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.

Create ldap_int_tblsize and ldap_int_ip_init().
Initialize from ldap_int_initialize().