Created base to FD.distribute.
Merge pull request #2 from carealejo/distribute

Created base to FD.distribute.
Added tasktype atoms and auxiliar functions to use it.
Auxiliar functioncs for builtins.
Added builtins for Gecode finite domain propagators.
Added bultins in FD.oz
modintvarprop.hh cleaned.
Added Gecode::count, Gecode::cumulative and Gecode::sequence propagator.
With auxiliary functions getIntSet and isIntSet.
Fixed modintvarprop.hh
Added Gecode::circuit propagator fully supported in modintvarprop.hh
and FD.oz.
Added Gecode::path propagator fully supported.
Merge pull request #3 from dmontenegro/css

Css