ENH: run nipy and dipy in both wheezy and sid chroots for sparc + RF

RF: unified referencing of python on those releases where it is
already known for sure (thus 2.7-wheezy instead of non-informative
2.x-wheezy)

also added printout of versions for pandas (hope it works)
Merge pull request #11 from neurodebian/master

ENH: run nipy and dipy in both wheezy and sid chroots for sparc + RF

Also RF: unified referencing of python on those releases where it is
already known for sure (thus 2.7-wheezy instead of non-informative
2.x-wheezy)

Also added printout of versions for pandas (hope it works)