CDB: Bug fixing

- Turn off initial breakpoint when attaching (terminal) and
  additionally ignore it before the first startup complete
- Refuse to step  the artifical thread created when
  interrupting
- If possible, switch to thread 0 when interupting (do not
  use artificial thread)
- Ignore non-fatal exceptions in dumper calls (stray Startup-
  complete-traps)
- Use right thread for dumper call loading
- Rename windows exception code enumeration
- Turn off modification off watch-data children by setType,
  show empty lists correctly.
- Verbose warnings about inserting invalid watch data.

src/plugins/debugger/cdb/cdbstacktracecontext.cpp

@@ -43,6 +43,7 @@ namespace Internal {
 const char *CdbStackTraceContext::winFuncFastSystemCallRet = "ntdll!KiFastSystemCallRet";
 const char *CdbStackTraceContext::winFuncDebugBreakPoint = "ntdll!DbgBreakPoint";
 const char *CdbStackTraceContext::winFuncWaitForPrefix = "kernel32!WaitFor";
+const char *CdbStackTraceContext::winFuncMsgWaitForPrefix = "kernel32!MsgWaitForMultipleObjects";
 
 CdbStackTraceContext::CdbStackTraceContext(const QSharedPointer<CdbDumperHelper> &dumper) :
         m_dumper(dumper),