Change the Thread constructor over to take a Process& rather than a ProcessSP.  We can't create Threads with a NULL ProcessSP, so it makes no sense to use the SP.
Then make the Thread a Broadcaster, and get it to broadcast when the selected frame is changed (but only from the Command Line) and when Thread::ReturnFromFrame 
changes the stack.
Made the Driver use this notification to print the new thread status rather than doing it in the command.
Fixed a few places where people were setting their broadcaster class by hand rather than using the static broadcaster class call.

<rdar://problem/12383087>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@165640 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.h b/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.h
index 97f5f8a..5454f2b 100644
--- a/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.h
+++ b/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.h
@@ -20,7 +20,7 @@
 class ThreadKDP : public lldb_private::Thread
 {
 public:
-    ThreadKDP (const lldb::ProcessSP &process_sp, 
+    ThreadKDP (lldb_private::Process &process,
                lldb::tid_t tid);
 
     virtual