[ENH] Make the gpu back-end use the new numpy c interface

[CRASH, ENH] fix crash cublas and extra debug info for shared var.

If we re-init a new cublas context, destroy the old one. Better error me...

Linalg

fix crash of profiling atexit when it clashes with pycuda atexit handler

Crash fix in IncSubtensor.grad

Used traceback module to set name of theano.function to file_name:line_number.

Doc

disable complex support in gpu reduce.

Started it, but I didn't finished it and I have other stuff to finish...

[ENH] speed up reduction on the colums of matries.

Add function_dump() to help user give us reproducable example.