Chanage ID-5100 to XONXOFF flow control

https://github.com/Hamlib/Hamlib/issues/1053

rigs/icom/id5100.c

@@ -87,9 +87,9 @@ const struct rig_caps id5100_caps =
     RIG_MODEL(RIG_MODEL_ID5100),
     .model_name = "ID-5100",
     .mfg_name =  "Icom",
-    .version =  BACKEND_VER ".0",
+    .version =  BACKEND_VER ".1",
     .copyright =  "LGPL",
-    .status =  RIG_STATUS_ALPHA,
+    .status =  RIG_STATUS_BETA,
     .rig_type =  RIG_TYPE_MOBILE,
     .ptt_type =  RIG_PTT_RIG,
     .dcd_type =  RIG_DCD_RIG,
@@ -99,7 +99,7 @@ const struct rig_caps id5100_caps =
     .serial_data_bits =  8,
     .serial_stop_bits =  1,
     .serial_parity =  RIG_PARITY_NONE,
-    .serial_handshake =  RIG_HANDSHAKE_NONE,
+    .serial_handshake =  RIG_HANDSHAKE_XONXOFF,
     .write_delay =  0,
     .post_write_delay =  0,
     .timeout =  1000,