privat/nit — pull request #1023 by jpages (2014-12-15 15:40:24+00:00)
Title: Improve construction of runtime structures

The nitvm does not use anymore model_utils.

The construction of runtime structures has changed and is more efficient than before.
Perfs: the nitvm is a little slower than the naive_interpreter instead of up to 2 times slower before this PR on some benchmarks.

Signed-off-by: Julien Pagès