In local_gpu_careduce, remove dimensions that is now detected as rebroadcastable

Small scan speed up on the GPU.

Added missing string formatting in typed list type.py.

Added ndim check to subtensor.

add pid macro in the theano config flag system.

Add support of more env variable.

Changed check dim place.

Typos

Crash fix equal_computations() again and scan opt speed up.

Add sort.grad support for vector and matrix when axis is None.

Fix the detection of where cuda is installed.

inserting missing comma when adding '-ccbin' to direct argument flags

betatim provided a fix to Theano/Theano#1912 in commit Theano/Theano@bb4b1a5
however that fix did not include a comma on the end of the line, causing the
'-ccflags' to be merged with the next string '--fmad'