Add macro for Strong(er) Authen Required

include/ldap.h

@@ -472,6 +472,7 @@ typedef struct ldapcontrol {
 #define LDAP_AUTH_METHOD_NOT_SUPPORTED	0x07
 #define LDAP_STRONG_AUTH_NOT_SUPPORTED	LDAP_AUTH_METHOD_NOT_SUPPORTED
 #define LDAP_STRONG_AUTH_REQUIRED	0x08
+#define LDAP_STRONGER_AUTH_REQUIRED	LDAP_STRONG_AUTH_REQUIRED
 #define LDAP_PARTIAL_RESULTS		0x09	/* LDAPv2+ (not LDAPv3) */
 
 #define	LDAP_REFERRAL				0x0a /* LDAPv3 */