Log Message:
Update databases/openldap to 2.2.19.  Changes from version 2.2.18 include:

* Fixed slapd check for mandatory filter in authz-regexp URI
* Fixed slapd bad descriptor check
* Fixed slapd ACI when the subject contains '#'
* Fixed back-ldap malformed URI check for multiple URIs
* Fixed back-ldap/back-meta static definition of be_open()
* Fixed back-bdb cache bugs, ctxcsn memory leak