+ MSG
+ - Fix MSG_task_get_remaining_work_ratio() to return 1.0 for tasks that have
+ not started.
+
+ S4U
+ - Execution->setHost() can be called after start() to migrate it.
+ - Comm::test_any() is now implemented.
+
+ XBT
+ - Remove XBT_LOG_CONNECT, it should be useless nowadays.
+
+ Fixed bugs:
+ - #245: migrating an actor does not migrate its execution
+