openldap: updated to 2.4.48

OpenLDAP 2.4.48
Added libldap OpenSSL Elliptic Curve support
Added libldap Expose OpenLDAP specific interfaces via openldap.h
Added slapd-monitor support for slapd-mdb
Fixed liblber leaks
Fixed liblber with partial flush
Fixed libldap ASYNC TLS so it works
Fixed libldap ASYNC connections with Solaris 10
Fixed libldap with SASL_NOCANON=on and ldapi connections
Fixed libldap to be able to unset syncrepl TLS options
Fixed libldap race condition in ldap_int_initialize
Fixed libldap return code in ldap_create_assertion_control_value
Fixed libldap to correctly disable IPv6 when configured to do so
Fixed libldap to correctly close TLS connection
Fixed libldap_r handling of deprecated OpenSSL function
Fixed liblunicode case correspondance
Fixed slapd with an idletimeout of less than four seconds
Fixed slapd config parser variable for Windows64
Fixed slapd syncrepl fallback handling with delta-syncrepl
Fixed slapd telephoneNumberNormalize, cert DN validation
Fixed slapd syncrepl for relax with delta-syncrepl
Fixed slapd to restrict rootDN proxyauthz to its own databases
Fixed slapd to initialize SASL SSF per connection
Fixed slapo-accesslog with SLAP_MOD_SOFT modifications
Fixed slapd-ldap starttls connections timeout behavior
Fixed slapd-ldap segfault when entry result doesn't match filter
Fixed slapd-meta conversion from slapd.conf to cn=config
Fixed slapd-meta assertion when network interface goes down
Fixed slapd-mdb fix bitshift integer overflow
Fixed slapd-mdb index cleanup with cn=config
Fixed slapd-mdb to improve performance with alias deref
Fixed slapo-accesslog possible assert with exops
Fixed slapo-chain to correctly reject multiple chaining URIs
Fixed slapo-chain conversion from slapd.conf to cn=config
Fixed slapo-memberof conversion from slapd.conf to cn=config
Fixed slapo-memberof for group name change to itself
Fixed slapo-ppolicy behavior when pwdInHistory is changed
Fixed slapo-rwm to not free original filter
Fixed slapo-syncprov contextCSN generation
Build Environment
Fixed slapd to only link to BDB libraries with static build
Fixed libldap implicit declaration with LDAP_CONNECTIONLESS
Fixed libldap double inclusion of limits.h in cyrus.c
Documentation
General - Fixed minor typos
admin24 - Miscellaneous updates promoting mdb and fixing examples
slapd.access(5) - Note MDB is the primary backend
slapd.backends(5) - Note MDB is the recommended backend
slapd-ldap(5) - Document starttls parameter
Contrib
Added slapo-lastbind capability to forward authTimestamp updates

(adam)