fix crash introduced during pep8 fix.

Gpu specify shape

Sparse

place. Also add the infer_shape method to Remove0

Minor stuff

Also fixed an indent issue

Crash fix

fix theano import crash on computer without gpu when theano flags device or init_gpu_device start with gpu.

Removes host_from_gpu and gpu_from_host around specify_shapes node,
making it run transperently on the GPU

Link blas to epd library correcly on windows.

Sparse

Remove use of sys.maxint in slices.

Sparse