Prep for release

CHANGES

 OpenLDAP 2.5 Change Log
 
-OpenLDAP 2.5.10 Engineering
+OpenLDAP 2.5.10 Release (2022/01/20)
 	Fixed libldap to init client socket port (ITS#9743)
 	Fixed libldap with referrals (ITS#9781)
 	Fixed slapd to allow objectClass edits with no net change (ITS#9772)

build/version.var

@@ -16,8 +16,8 @@ ol_package=OpenLDAP
 ol_major=2
 ol_minor=5
 ol_patch=X
-ol_api_inc=20509
+ol_api_inc=20510
 ol_api_current=1
-ol_api_revision=4
+ol_api_revision=5
 ol_api_age=1
-ol_release_date="2021/10/25"
+ol_release_date="2022/01/20"