Add special implementations for dnn_conv, dnn_gradinput, dnn_gradweight

that take algo, alpha and beta as parameters. Rewrite tests to handle both 2D and 3D conv correctly. Simplify gradinput and gradweight tests.

Add special implementations for dnn_conv, dnn_gradinput, dnn_gradweight
c675144a · notoraptor · 546daeff · c675144a
--- a/theano/gpuarray/tests/check_dnn.py
+++ b/theano/gpuarray/tests/check_dnn.py