Update features for MSVC 5.

include/ldap_features.h.nt

@@ -7,20 +7,49 @@
  * license is available at http://www.OpenLDAP.org/license.html or
  * in file LICENSE in the top-level directory of the distribution.
  */
-
 /* 
  * LDAP Features
  */
 #ifndef _LDAP_FEATURES_H
 #define _LDAP_FEATURES_H 1
 
-/* OpenLDAP Debug Support */
-#define LDAP_API_FEATURE_X_OPENLDAP_DEBUG LDAP_API_VENDOR_VERSION
+/*
+** OpenLDAP reentrancy/thread-safeness should be dynamically
+** checked using ldap_get_option().
+**
+** The -lldap implementation may or may not be:
+**		LDAP_API_FEATURE_THREAD_SAFE
+**
+** The preprocessor flag LDAP_API_FEATURE_X_OPENLDAP_REENTRANT can
+** be used to determine if -lldap is LDAP_API_FEATURE_THREAD_SAFE at
+** compile time.
+**
+** The -lldap_r implementation is always THREAD_SAFE but
+** may also be:
+**		LDAP_API_FEATURE_SESSION_THREAD_SAFE
+**		LDAP_API_FEATURE_OPERATION_THREAD_SAFE
+**
+** The preprocessor flag LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE
+** can be used to determine if -lldap_r is availalbe at compile
+** time.  You must define LDAP_THREAD_SAFE if and only if you
+** link with -lldap_r.
+**
+** If you fail to define LDAP_THREAD_SAFE when linking with
+** -lldap_r or define LDAP_THREAD_SAFE when linking with -lldap,
+** provided header definations and declarations may be incorrect.
+**
+*/
+
+/* is -lldap reentrant or not */
+/* #undef LDAP_API_FEATURE_X_OPENLDAP_REENTRANT */
+
+/* is threadsafe version of -lldap (ie: -lldap_r) *available* or not */
+/* #undef LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE */
 
-/* OpenLDAP v2 DNS */
+/* LDAP v2 DNS */
 /* #undef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
 
-/* OpenLDAP v2 Referrals */
-#define LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS LDAP_API_VENDOR_VERSION
+/* LDAP v2 Referrals */
+#define LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS LDAP_VENDOR_VERSION
 
 #endif /* LDAP_FEATURES */