[Qt] Qt TArrow implementation

[Den.Jean at telenet.be]

>It's already implemented at my svn copy, but I'm waiting for bindings update 
>and fixation of points problem.
>

I did a quick release. Can you test and report back.
After that I will make a windows binary.

I will also see for Qt4.2.3 releases. 
Perhaps source only for windows, I do not know yet if I can get
2 Qt's on my windows machine

regards,

Den Jean