+ - MSG_host_(get/set)_params -> MSG_vm_(get/set)_params
+ * VM properties. Since msg_vm_t are msg_host_t, just use
+ MSG_host_get_property_value() and friends
+
+ * Task affinity. Its intended behavior (that was very badly tested
+ and probably not really working) was deceiving what most users
+ would have hoped here.
+ * xbt_os_sem_get_value: unused internally, deprecated on OS X El Capitan