Prep for release

CHANGES

 OpenLDAP 2.4 Change Log
 
-OpenLDAP 2.4.20 Engineering
+OpenLDAP 2.4.20 Release (2009/11/24)
 	Fixed client tools with LDAP options (ITS#6283)
 	Fixed liblber embedded NUL values in BerValues (ITS#6353)
 	Fixed liblber inverted LBER_USE_DER test (ITS#6348)

build/version.var

@@ -15,9 +15,9 @@
 ol_package=OpenLDAP
 ol_major=2
 ol_minor=4
-ol_patch=X
-ol_api_inc=20419
+ol_patch=20
+ol_api_inc=20420
 ol_api_current=7
-ol_api_revision=2
+ol_api_revision=3
 ol_api_age=5
-ol_release_date="2009/10/06"
+ol_release_date="2009/11/24"