Merge branch '0.5.x' into 0.6.0.x

Conflicts:
	src/main.h
	src/net.cpp
	src/serialize.h

src/net.cpp

@@ -693,7 +693,7 @@ void ThreadSocketHandler2(void* parg)
         if (nSelect == SOCKET_ERROR)
         {
             int nErr = WSAGetLastError();
-            if (hSocketMax > -1)
+            if (hSocketMax != INVALID_SOCKET)
             {
                 printf("socket select error %d\n", nErr);
                 for (unsigned int i = 0; i <= hSocketMax; i++)
@@ -1535,7 +1535,7 @@ void ThreadMessageHandler2(void* parg)
         vnThreadsRunning[THREAD_MESSAGEHANDLER]--;
         Sleep(100);
         if (fRequestShutdown)
-            Shutdown(NULL);
+            StartShutdown();
         vnThreadsRunning[THREAD_MESSAGEHANDLER]++;
         if (fShutdown)
             return;