[svn] * Avoid access to bag item prototype for getting bag size, use related item update field instead as more fast source.

* Better check client inventory pos data received in some client packets to skip invalid cases.
* Removed some unnecessary database queries.
* Make guid lookup for adding ignore async.
* Added two parameter versions of the AsyncQuery function
* Make queries for adding friends async. - Hunuza
* Replace some PQuery() calls with more simple Query() - Hunuza
* Mark spell as executed instead of deleteable to solve crash.
*** Source mangos.

**Its a big commit. so test with care... or without care.... whatever floats your boat.

--HG--
branch : trunk

src/game/CharacterHandler.cpp

@@ -634,7 +634,7 @@ void WorldSession::HandlePlayerLogin(LoginQueryHolder * holder)
     }
 
     // friend status
-    sSocialMgr.SendFriendStatus(pCurrChar, FRIEND_ONLINE, pCurrChar->GetGUIDLow(), "", true);
+    sSocialMgr.SendFriendStatus(pCurrChar, FRIEND_ONLINE, pCurrChar->GetGUIDLow(), true);
 
     // Place character in world (and load zone) before some object loading
     pCurrChar->LoadCorpse();