Updating deprecated functions

[Cyrille Berger]

On Sunday 12 September 2010, LukasT.dev at gmail.com wrote:
> I think there will be complications in transform worker which is optimized
> (original author warned me when I was working on optimizations for
> iterators)  for old iterators.
I seriously doubt it will matter. The new iterators are not that different from 
the old ones, they just use less code.

> I don't know how, but the code there is
> template code and it is complicated to understand it.
Yes, porting the transform worker is probably not the first things to do :) 
Filters should be ported first.

-- 
Cyrille Berger