I may definitely help on the D project. I noticed that gdc doesn't have profile guided optimization too. So yeah, I cannot use D right now, I mean for this project.
Ok, I will do my best to have some spare time on Dlang. Didn't really looked at the code already and I code for years in C, which is my first class coding language. Hope it will not be any kind of barrier (c++ is my.. third best coding buddy anyway (after python, excellent for managing systems)).
Many thanks to all the community. I will stick with you and see what I can bring (or cannot).
:) Bye