Improve CC's CallTip

[Loaden]

1. support preprocessor tip, example: "MessageBox" to "MessageBoxA".


2. support global namespace. like "::MessageBox"
3. support comment/string/char judge.

Related discussion:
http://forums.codeblocks.org/index.php/topic,12387.0.html
http://forums.codeblocks.org/index.php/topic,12396.0.html

Depend patch:http://forums.codeblocks.org/index.php/topic,12406.0.html

EDIT：When replace target use 'itemText+_T("()")', add calltip support.

Code

if (event.GetEventType() == wxEVT_SCI_AUTOCOMP_SELECTION)
    {
...
            control->ReplaceTarget(itemText+_T("()"));
            pos = control->GetCurrentPos();
            control->GotoPos(pos + itemText.size()+2);
            if ((*it).second != 0)
            {
                pos = control->GetCurrentPos();
                control->GotoPos(pos - 1);
                ShowCallTip();  // HERE!
            }
        }
    }

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