[9466] Implemented SOAP in MaNGOS

- removed deprecated code from RASocket
- allow more than one login at a time on the RA console
- added gsoap library for handling SOAP requests
- removed deprecated mangos_string entry

Thanks to:
- Derex for reporting a bug which occured if more than 1024
    players were connected  [poll() vs select()]
- caeruleaus for adding windowsbuild support
- vladimir for suggesting a different thread starting order
- fdb_ for suggesting SOAP in the first place

src/game/Chat.cpp

@@ -873,6 +873,7 @@ bool ChatHandler::ExecuteCommandInTable(ChatCommand *table, const char* text, co
                     SendSysMessage(LANG_CMD_SYNTAX);
 
                 ShowHelpForCommand(table[i].ChildCommands,text);
+                SetSentErrorMessage(true);
             }
 
             return true;
@@ -900,12 +901,13 @@ bool ChatHandler::ExecuteCommandInTable(ChatCommand *table, const char* text, co
             }
         }
         // some commands have custom error messages. Don't send the default one in these cases.
-        else if(!sentErrorMessage)
+        else if(!HasSentErrorMessage())
         {
             if(!table[i].Help.empty())
                 SendSysMessage(table[i].Help.c_str());
             else
                 SendSysMessage(LANG_CMD_SYNTAX);
+            SetSentErrorMessage(true);
         }
 
         return true;
@@ -999,7 +1001,10 @@ int ChatHandler::ParseCommands(const char* text)
     std::string fullcmd = text;                             // original `text` can't be used. It content destroyed in command code processing.
 
     if (!ExecuteCommandInTable(getCommandTable(), text, fullcmd))
+    {
         SendSysMessage(LANG_NO_CMD);
+        SetSentErrorMessage(true);
+    }
 
     return 1;
 }
@@ -2256,8 +2261,8 @@ bool CliHandler::isAvailable(ChatCommand const& cmd) const
 
 void CliHandler::SendSysMessage(const char *str)
 {
-    m_print(str);
-    m_print("\r\n");
+    m_print(m_callbackArg, str);
+    m_print(m_callbackArg, "\r\n");
 }
 
 std::string CliHandler::GetNameLink() const