Implement mailslots.

diff --git a/server/request.h b/server/request.h
index 5c8ffe2..5d314db 100644
--- a/server/request.h
+++ b/server/request.h
@@ -288,6 +288,9 @@
 DECL_HANDLER(adjust_token_privileges);
 DECL_HANDLER(get_token_privileges);
 DECL_HANDLER(duplicate_token);
+DECL_HANDLER(create_mailslot);
+DECL_HANDLER(open_mailslot);
+DECL_HANDLER(set_mailslot_info);
 
 #ifdef WANT_REQUEST_HANDLERS
 
@@ -479,6 +482,9 @@
     (req_handler)req_adjust_token_privileges,
     (req_handler)req_get_token_privileges,
     (req_handler)req_duplicate_token,
+    (req_handler)req_create_mailslot,
+    (req_handler)req_open_mailslot,
+    (req_handler)req_set_mailslot_info,
 };
 #endif  /* WANT_REQUEST_HANDLERS */