BF: cmd_ttest to run a simple t-test across results volumes
Merge pull request #257 from yarikoptic/enh/cmd_ttest

BF: cmd_ttest to run a simple t-test across results volumes
DOC(BF): fix assumption about chunks indexes in tutorial_classifiers

before we started numbering of chunks from 0.
In openfmri layout of the tutorial we start with 1 (e.g. run001)
that is why odd/even runs notion flips (we start with odd 1 now, not even 0 as before).
ENH: use getcwd() (full path) instead of curdir (just .) for pymvpa_datadbroot
Merge pull request #263 from yarikoptic/master

BF+ENH:  fixing tutorial_classifiers for openfmri layout chunk indexing + let's use full path to datadb
DOC(BK): started to fix tutorial_eventrelated for new openfmri layout
Merge branch 'master' of github.com:PyMVPA/PyMVPA

* 'master' of github.com:PyMVPA/PyMVPA:
BF: SKLTransformer deals with transform() without 'y' argument

Some transformer like PCA() do not swallow a useless y= argument.
This change catches this condition.

Also add the class to the suite...
Revert "DOC(BF): fix assumption about chunks indexes in tutorial_classifiers"

This reverts commit f1f0c9faa5fba9ae9f2449fb6f2a0802510e7890.
BF: Make chunks zero-based (even from OpenFMRI)
BF: Fix remaining technical issues with the tutorial

A conceptual overhaul that fully embraces the OpenFMRI approach is
still pending...