Add a new SBThread::GetQueue() method to get the queue that is

currently associated with a given thread, on relevant targets.

Change the queue detection code to verify that the queues 
associated with all live threads are included in the list.
<rdar://problem/16411314> 

llvm-svn: 207160

lldb/source/API/SBQueue.cpp

@@ -15,6 +15,8 @@
 
 #include "lldb/API/SBProcess.h"
 #include "lldb/API/SBThread.h"
+#include "lldb/API/SBQueueItem.h"
+
 #include "lldb/Core/Log.h"
 #include "lldb/Target/Process.h"
 #include "lldb/Target/Queue.h"