Implemented SetCommMask, SetCommTimeouts, GetCommMask, GetCommTimeouts.

diff --git a/server/request.h b/server/request.h
index d66c230..975330c 100644
--- a/server/request.h
+++ b/server/request.h
@@ -202,6 +202,8 @@
 DECL_HANDLER(wake_queue);
 DECL_HANDLER(wait_input_idle);
 DECL_HANDLER(create_serial);
+DECL_HANDLER(get_serial_info);
+DECL_HANDLER(set_serial_info);
 
 #ifdef WANT_REQUEST_HANDLERS
 
@@ -316,6 +318,8 @@
     (req_handler)req_wake_queue,
     (req_handler)req_wait_input_idle,
     (req_handler)req_create_serial,
+    (req_handler)req_get_serial_info,
+    (req_handler)req_set_serial_info,
 };
 #endif  /* WANT_REQUEST_HANDLERS */