A few notes:

* I went ahead and removed theano/misc/hg_version_hook.sh. It
  is not functional now, so I inferred that no one cares about
  it (file a new issue if I'm wrong!). It'll be in the history,
  should we ever want to write a git hook replacement for it.
* I made some minor whitespace fixes, including collapsing the
  unnecessary double-depth try/finally.
* I think that the _minimal_ext_cmd isn't needed, but I left it in.
* Why not do direct substitution into full_version, instead of
  writing code to do Python substitution again? Left it as is for
  now, in case there's a good reason...

SpSum Op: pep8'ified, perform rolled back to basic (clearer/safer) implementation, and some prints remnoved from tests.

Conflicts:

	theano/sparse/sandbox/test_sp.py

Conflicts:

	theano/sparse/sandbox/test_sp.py

Updated instructions for GPU on Windows

Make theano-cache being installed by easy_install and be present in the ...

Minor fixes to doc

added verbose error message for function missing input

implementation of Rop for the Print op

Some fixes tests scan

removed debugging code

That line forced scan not to run with CVM .. and it was part of some
debugging I did on scan

The infershape mechanism differs for the two different type of outputs scan
can have (those with no initial state and those with initial state)

Infershape cond scan

try to fix ticket 101, but we need to test it when we make the release

test the inplace optimization for ifelse

failed with floatX=float32.

* gradient now supports non-diagonal inputs
* ExtractDiag won't crash if input has some 0-dimensions

Using new variable comparison mechanism in tests