Adding a comment in the manager

[pplomba]

Hi... it's woonder to insert the comments management in the OrderManager....
some Mql programmers use this for retain some variables
Regards

Line 36: ObjectAttr(string,comment,Comment);
...
Line 178: int ticket=OrderSend(s,cmd,Math::roundUpToMultiple(lots,MINLOT), price,m_slippage, OS::N(s,stoploss), OS::N(s,takeprofit), m_comment,m_magic,0,m_color[cmd&1]);

[dingmaotu]

I will add an optional parameter comment to all ordering commands as users may want to use different comments for different orders