Test careduce add

Fix variable used (HOMEPATH is not always defined)

Install scipy in travis-ci buildbot.

Adv sub1: allow broadcasted index vector.

A test was using CAReduce{add} instead of Sum, so the accumulation
dtype could not be set.

Also fixed CAReduceDtype.make_node to allow use of CAReduceDtype{Add}
directly, instead of Sum.

Warn infer shape test

This can hid error.

Add info about GPU instruction for Debian.

BUG: unreferenced variable.

Try to fix Stochastic order scan by using OrderedDict more often.

This was creating warning in the tests.

Try to detect bug in Mac OS X parallel BLAS

fix to clone functionality of theano

Minor fixes

Add a note about the openblas package that could conflict with atlas.