Bug 706179 - DS can not restart after create a new objectClass has entryusn attribute

https://bugzilla.redhat.com/show_bug.cgi?id=706179

Description: entryusn used to be dynamically added in the backend
init, which occurred after the schema initialization.  And it made
the server's start-up fail when an objectclass contains entryusn
as its attribute type.  This patch adds entryusn to the schema
file.

ldap/schema/01core389.ldif

@@ -126,6 +126,7 @@ attributeTypes: ( nsSSLActivation-oid NAME 'nsSSLActivation' DESC 'Netscape defi
 attributeTypes: ( 2.16.840.1.113730.3.1.2091 NAME 'nsslapd-suffix' DESC 'Netscape defined attribute type' SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 X-ORIGIN 'Netscape' )
 attributeTypes: ( 2.16.840.1.113730.3.1.2092 NAME 'nsslapd-ldapiautodnsuffix' DESC 'Netscape defined attribute type' SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 X-ORIGIN 'Netscape' )
 attributeTypes: ( 2.16.840.1.113730.3.1.2095 NAME 'connection' DESC 'Netscape defined attribute type' SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 X-ORIGIN 'Netscape' )
+attributeTypes: ( 2.16.840.1.113730.3.1.2096 NAME 'entryusn' DESC 'Netscape defined attribute type' SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation X-ORIGIN 'Netscape' )
 #
 # objectclasses
 #

ldap/servers/slapd/back-ldbm/init.c

@@ -85,10 +85,6 @@ ldbm_back_add_schema( Slapi_PBlock *pb )
 			LDBM_ENTRYID_OID, DIRSTRING_SYNTAX_OID, CASEIGNOREMATCH_NAME,
 			SLAPI_ATTR_FLAG_SINGLE );
 
-	rc |= add_ldbm_internal_attr_syntax( SLAPI_ATTR_ENTRYUSN,
-			LDBM_ENTRYUSN_OID, INTEGER_SYNTAX_OID, INTFIRSTCOMPMATCH_NAME,
-			SLAPI_ATTR_FLAG_SINGLE|SLAPI_ATTR_FLAG_NOUSERMOD );
-
 	return rc;
 }