Prep for release

CHANGES

 OpenLDAP 2.4 Change Log
 
-OpenLDAP 2.4.47 Engineering
+OpenLDAP 2.4.47 Release (2018/12/19)
 	Added slapd-sock DN qualifier for subtrees to be processed (ITS#8051)
 	Added slapd-sock ability to send extended operations to external listeners (ITS#8714)
 	Fixed liblber to avoid incremental access to user-supplied bv in dupbv (ITS#8752)

build/version.var

@@ -15,9 +15,9 @@
 ol_package=OpenLDAP
 ol_major=2
 ol_minor=4
-ol_patch=X
-ol_api_inc=20446
+ol_patch=47
+ol_api_inc=20447
 ol_api_current=12
-ol_api_revision=9
+ol_api_revision=10
 ol_api_age=10
-ol_release_date="2018/03/22"
+ol_release_date="2018/12/19"