Added support for Novell LDAP SDK SSL and standardized the SSL support across

the various LDAP SDKs. Isolated the SSL functionality to mod_ldap rather than
speading it across mod_auth_ldap and mod_ldap. Also added LDAPTrustedCA
and LDAPTrustedCAType directives to allow for a more common method of
specifying the SSL certificate.

Backported to v2.0 from v2.1


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@98931 13f79535-47bb-0310-9956-ffa450edef68