Set context to defined value OnRun

The context for the eventloop is currently not set to
anything when entering an OnRun callback. The context
are now set to some known value for simulated and real
time when entering OnRun callback.

While we are here, I noticed that the *remote* uuid was set to the local
UUID in timers.  That makes no sense, so stop doing that.

Change-Id: I2c227a7e9742b092c9079549aad341154460ff11
Signed-off-by: Austin Schuh <austin.schuh@bluerivertech.com>
diff --git a/aos/ipc_lib/lockless_queue.h b/aos/ipc_lib/lockless_queue.h
index 41aa0fb..b0fc425 100644
--- a/aos/ipc_lib/lockless_queue.h
+++ b/aos/ipc_lib/lockless_queue.h
@@ -94,7 +94,7 @@
     uint32_t remote_queue_index;
 
     // Remote boot UUID for this message.
-    UUID remote_boot_uuid;
+    UUID source_boot_uuid;
 
     size_t length;
   } header;
@@ -309,7 +309,7 @@
   void *Data();
   bool Send(size_t length, monotonic_clock::time_point monotonic_remote_time,
             realtime_clock::time_point realtime_remote_time,
-            uint32_t remote_queue_index, const UUID &remote_boot_uuid,
+            uint32_t remote_queue_index, const UUID &source_boot_uuid,
             monotonic_clock::time_point *monotonic_sent_time = nullptr,
             realtime_clock::time_point *realtime_sent_time = nullptr,
             uint32_t *queue_index = nullptr);
@@ -318,7 +318,7 @@
   bool Send(const char *data, size_t length,
             monotonic_clock::time_point monotonic_remote_time,
             realtime_clock::time_point realtime_remote_time,
-            uint32_t remote_queue_index, const UUID &remote_boot_uuid,
+            uint32_t remote_queue_index, const UUID &source_boot_uuid,
             monotonic_clock::time_point *monotonic_sent_time = nullptr,
             realtime_clock::time_point *realtime_sent_time = nullptr,
             uint32_t *queue_index = nullptr);
@@ -404,7 +404,7 @@
               realtime_clock::time_point *realtime_sent_time,
               monotonic_clock::time_point *monotonic_remote_time,
               realtime_clock::time_point *realtime_remote_time,
-              uint32_t *remote_queue_index, UUID *remote_boot_uuid,
+              uint32_t *remote_queue_index, UUID *source_boot_uuid,
               size_t *length, char *data) const;
 
   // Returns the index to the latest queue message.  Returns empty_queue_index()