mdbx: new testset (initial, stub).

Initial stub for https://github.com/ReOpen/libmdbx/issues/8

test/osal.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017 Leonid Yuriev <leo@yuriev.ru>
+ * and other libmdbx authors: please see AUTHORS file.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#pragma once
+
+#include "base.h"
+
+void osal_setup(const std::vector<actor_config> &actors);
+void osal_broadcast(unsigned id);
+int osal_waitfor(unsigned id);
+
+mdbx_pid_t osal_getpid(void);
+int osal_actor_start(const actor_config &config, mdbx_pid_t &pid);
+actor_status osal_actor_info(const mdbx_pid_t pid);
+void osal_killall_actors(void);
+int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout);
+void osal_wait4barrier(void);