external sasl (ITS#3168)

[lha@stacken.kth.se]

Full_Name: Love
Version: 2.1.22
OS: netbsd
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (2001:6b0:1:1ed1:205:3cff:fe07:bc0e)


There is no way to add sasl layer encryption/integrity when using
a third party sasl library because of too much abstraction layers.

adding sasl bind is just fine, but not layer support.

basiclly what I can't do is:

     do-sasl-bind-loop-dance...;

    if (rc == LDAP_SUCCESS) {
#if 0
	ber_sockbuf_add_io(ld->ld_conns->lconn_sb, &ldap_tsasl_io,
			   LBER_SBIOD_LEVEL_APPLICATION, peer);

#endif
    }