lost a deprecation warning. adding it back

src/core/thread.d

@@ -793,7 +793,7 @@ class Thread
         //       starting thread.  In effect, not doing the add here risks
         //       having thread being treated like a daemon thread.
         synchronized( slock )
-        {	    
+        {       
             version( Windows )
             {
                 m_hndl = cast(HANDLE) _beginthreadex( null, m_sz, &thread_entryPoint, cast(void*) this, 0, &m_addr );
@@ -1064,8 +1064,11 @@ class Thread
     // Actions on Calling Thread
     ///////////////////////////////////////////////////////////////////////////
 
-
+    
     /**
+     * $(RED Scheduled for deprecation in December 2011. Please use the version
+     *       which takes a $(D Duration) instead.)
+     *
      * Suspends the calling thread for at least the supplied period.  This may
      * result in multiple OS calls if period is greater than the maximum sleep
      * duration supported by the operating system.