Added mq_timedsend() and mq_timedreceive()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@166 42af7a65-404d-4744-a932-0658087f49c3

Documentation/NuttX.html

@@ -454,6 +454,11 @@ Other memory:
 
 	* mq_receive and mq_send now return errno's appropriately
 	* mq_receive and mq_send are now correctly awakened by signals.
+	* Fixed an unmatched sched_lock/unlock pair in task_delete().
+	* sched_lock must be called in _exit() because operation of
+	  task_delete() can cause pending tasks to be merged and a
+	  context switch to occur.
+	* Added mq_timedreceive() and mq_timedsend()
 	* Started m68322
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