fixes for win32 due to changes in how s_restartable is handled.

the main change is that WM_QUIT now causes the thread to be
cancelled instead of mainLoop() just returning.  this also
requires runDaemon() to call the run function in a new thread
each time it calls it because it could can cancelled.

platform/CMSWindowsScreen.cpp

@@ -194,7 +194,7 @@ CMSWindowsScreen::mainLoop()
 
 		// handle quit message
 		if (event.m_msg.message == WM_QUIT) {
-			break;
+			CThread::getCurrentThread().cancel();
 		}
 
 		// dispatch message