Fix self.statistics_ souldn't be set if axis==1
DOC ignoring gen_rst's parsing errors

closes #1759
Fix use of self
Merge pull request #2262 from NicolasTr/fix_statistics

Imputer: self.statistics_ souldn't be set if axis==1
ENH added multiclass_log_loss metric
ENH rewrite multiclass_log_loss, rename log_loss, document it
ENH Scorer object for log loss
ENH add log_likelihood_score as -log_loss

... or rather, the other way around.
BUG: add new preprocessing module to setup.py
Merge pull request #2264 from jakevdp/setup_fix

BUG: add new preprocessing module to setup.py
ENH: make bdist_rpm work
ENH rename eval / pseudolikelihood to score_samples
PY3 new overfit prevention stuff in 20newsgroups loader

Why were the tests not catching this?
FIX: remove blank lines
fixing ridge and label binarizer... I'm pretty sure that worked before?
FIX make neighbors y prediction shape consistent
TST add regression test for label_binarizer
More explicit tests in test_label_binarizer_column_y
fix: check for impurity ties
added 32bit 64bit equality test case