ITS#527: slapd_shutdown is static, remove extern in header

CHANGES

@@ -8,6 +8,7 @@ Changes included in OpenLDAP 1.2.11 Release Engineering
 		non-zero number of items to process with only one replica.
 	Fixed strdup use in libldap/request.c
 	Fixed NULL prefix bug in libldap/ufn.c
+	Fixed slapd_shutdown extern reference bug (ITS#527)
 	Build Environment
 		Changed LDBM directory to $localstatedir/openldap-ldbm
 

servers/slapd/proto-slap.h

@@ -249,7 +249,6 @@ extern int		global_schemacheck;
 extern int		lber_debug;
 extern int		ldap_syslog;
 extern int		num_conns;
-extern int		slapd_shutdown;
 extern long		num_bytes_sent;
 extern long		num_entries_sent;
 extern long		ops_completed;