Christian Helmuth b622a5a788 vbox: use RTThreadCreate for periodic_gip thread
This prevents the following error message.

  [init -> vbox1] Error: pthread_self() called from alien thread named 'periodic_gip'
2019-11-19 14:42:23 +01:00
..
2019-05-27 14:52:52 +02:00
2019-08-28 14:18:44 +02:00