added optimization for dividing by one

Remove an error when Theano process exit.

small optimization of log likelihood function computation

Flake8 for files in sandbox

[MRG] Ignore E501 (lines too long) for the flake8 test.

Fixes for detection of mkl for win32 with anaconda

Fix GPU test failure since cpu softmax change. 

Now, theano.config.blas.ldflags will be read each time.
Also cache the result of equivalent calls when specifying
default values explicitly.

Add exception when using an old version of pydot

These come from a merge? Maybe? And they only show up in python2?

This also somehow revealed a bunch of errors in files that where not on the whitelist, so I fixed those.

I also took off the whitelist files that pass due to this change.

Add Equilibrium profiling of global and final optimization

[MRG] Fix for using MonitorMode with scan

[MRG] FAST_COMPILE now lazy by default