[pymvpa] removing some for loops in _smv.py

[Valentin Haenel]

* Yaroslav Halchenko <debian at onerussian.com> [090424]:
> BTW -- have you done GLM with FIR modeling outside? since we have basic
> GLM modeling now, I guess you could easily do it within PyMVPA -- just
> specify that easy FIR design. It probably will be slower though

I am using FIR betas which were calculated by someone else using SPM (probably
version 2). Although i won't have time to try this with PyMVPA i'll keep it in
mind in case someone in this lab asks if it is possible.

V-