Start implementing named pipes.

diff --git a/server/request.h b/server/request.h
index 6a5bc40..8afa8da 100644
--- a/server/request.h
+++ b/server/request.h
@@ -186,6 +186,9 @@
 DECL_HANDLER(get_serial_info);
 DECL_HANDLER(set_serial_info);
 DECL_HANDLER(create_async);
+DECL_HANDLER(create_named_pipe);
+DECL_HANDLER(open_named_pipe);
+DECL_HANDLER(connect_named_pipe);
 
 #ifdef WANT_REQUEST_HANDLERS
 
@@ -310,6 +313,9 @@
     (req_handler)req_get_serial_info,
     (req_handler)req_set_serial_info,
     (req_handler)req_create_async,
+    (req_handler)req_create_named_pipe,
+    (req_handler)req_open_named_pipe,
+    (req_handler)req_connect_named_pipe,
 };
 #endif  /* WANT_REQUEST_HANDLERS */