[ptx] autopano-sift 1.6 released: control-point coverage improved, bug fixes

[nerochiaro]

> I've got autopano-sift 1.6 mostly built on Windows with Microsoft's
> .NET compiler. 

I gave a shot at this too, and got similar results.
Which version of the framework did you use ?

> Build errata
> Line 160 of autopanog.cs:
>  fs.CancelButton.Clicked += OnAddImageCancel;
> 
> shouldn't OnAddImageCancel be a function call? I commented it out to
> get it to compile, it looks like that would disable cancelling out of
> the file selection dialog.

If you change that line to 

fs.CancelButton.Clicked += new EventHandler(OnAddImageCancel);

it should compile and work fine.