Add a general mechanism to wait on the debugger for Broadcasters of a given class/event bit set.

Use this to allow the lldb Driver to emit notifications for breakpoint modifications.
<rdar://problem/10619974>

llvm-svn: 150665

lldb/scripts/Python/interface/SBProcess.i

@@ -52,6 +52,9 @@ public:
 
     ~SBProcess();
 
+    static const char *
+    GetBroadcasterClassName ();
+
     void
     Clear ();